Create an Account  |   Log In

View All »Matching Part Numbers


Your Shopping Cart is Empty
           

Broadband Dielectric Mirrors


Related Items

Features

  • Five Round Mirror Options: Ø1/2", Ø19 mm, Ø1", Ø2", Ø3", or Ø4"
  • Three Square Mirror Options: 1/2", 1", or 2"
  • Four Broadband Coating Options
    • 350 - 400 nm (Not Stocked on Ø3", Ø4", or Square Mirrors)
    • 400 - 750 nm
    • 750 - 1100 nm
    • 1280 - 1600 nm (Not Stocked on Ø3", Ø4", or Square Mirrors)
  • Fused Silica Substrates
  • Ravg > 99% for S- and P- Polarization for Angles of Incidence from 0 to 45°

Thorlabs' Broadband Dielectric Mirrors offer excellent reflectance over four different spectral ranges. Due to run-to-run coating variations, please note that the specified spectral range listed for each coating is smaller than the actual spectral region over which the mirror is effective. The plots shown under the Reflectance Plots Tab show the performance characteristics of a typical mirror near the edges of its effective spectral range.

Optic Cleaning Tutorial
Optical Coating Information

Thorlabs also offers our broadband mirrors in packages of 10. By purchasing these mirrors in bulk, a 10% discount is offered over the individual piece price.

As seen in the image to the right, the back of each mirror is engraved with its respective part number.

The plot below is the reflectance of each broadband mirror coating in the BB series as a function of wavelength for unpolarized light incident at an angle of 8°. This choice of incident angle was due to the measurement limitations at 0°; however the plots closely represent reflectance at 0°. More detailed plots that also include polarization information are available under the Reflectance Plots Tab.

 

For applications that would benefit from having a small portion of the beam transmitted through the optic, consider one of our backside polished mirrors. Alternatively, if you need a mirror that bridges the spectral range between two different coatings, consider a mirror with a metallic coating or, if the mirrors are needed in sufficient quantity, contact Technical Support for a custom coating quotation.

Specifications
MaterialFused Silica
Surface Flatnessλ/10
Surface Quality10-5 Scratch-Dig
Back SurfaceFine Ground
Clear Aperture>85% of Diameter (Round)
>90% of Dimension (Square)
Parallelism≤3 arcmin
ThicknessØ1/2" Optics6.0 mm (0.24")
1/2" x 1/2" Optics6.0 mm (0.24")
Ø19 mm Optics6.0 mm (0.24")
Ø1" Optics6.0 mm (0.24")
1" x 1" Optics6.0 mm (0.24")
Ø2" Optics12.0 mm (0.47")
2" x 2" Optics6.0 mm (0.24")
Ø3" Optics19.1 mm (0.75")
Ø4" Optics19.1 mm (0.75")
Thickness Tolerance±0.2 mm
Diameter Tolerance+0.0 mm / -0.1 mm
Coating Specifications
Coating DesignationReflectance (click for graph)
-E01Ravg >99% (350 - 400 nm)
-E02Ravg >99% (400 - 750 nm)
-E03Ravg >99% (750 - 1100 nm)
-E04Ravg >99% (1280 - 1600 nm)
Coating DesignationDamage Threshold
-E01
1 J/cm2
(355 nm, 10 ns, 10 Hz, Ø0.373 mm),
-E02
0.25 J/cm2
(532 nm, 10 ns, 10 Hz, Ø0.803 mm)
-E03
1 J/cm2
(810 nm, 10 ns, 10 Hz, Ø0.133 mm),
0.5 J/cm2
(1064 nm, 10 ns, 10 Hz, Ø0.433 mm)
-E04
2.5 J/cm2
(1542 nm, 10 ns, 10 Hz, Ø0.181 mm)

These plots show the reflectance of each of our four dielectric coatings for a typical coating run. The shaded region in each graph denotes the spectral range over which the coating is highly reflective. Due to variations in each run, this recommended spectral range is narrower than the actual range over which the optic will be highly reflective. If you have any concerns about the interpretation of this data, please contact Tech Support. For applications that require a mirror that bridges the spectral range between two dielectric coatings, please consider a metallic mirror.

-E01 Coating (350 - 400 nm)

Excel Spreadsheet with Raw Data for -E01 Coating, 8° and 45° AOI

-E02 Coating (400 - 750 nm)

Excel Spreadsheet with Raw Data for -E02 Coating, 8° and 45° AOI

-E03 Coating (750 - 1100 nm)

Excel Spreadsheet with Raw Data for -E03 Coating, 8° and 45° AOI

-E04 Coating (1280 - 1600 nm)

Excel Spreadsheet with Raw Data for -E04 Coating, 8° and 45° AOI

Damage Threshold Specifications
Coating Designation
(Item # Suffix)
Damage Threshold
-E011 J/cm2 (355 nm, 10 ns, 10 Hz, Ø0.373 mm)
-E020.25 J/cm2 (532 nm, 10 ns, 10 Hz, Ø0.803 mm)
-E031 J/cm2 (810 nm, 10 ns, 10 Hz, Ø0.133 mm),
0.5 J/cm2 (1064 nm, 10 ns, 10 Hz, Ø0.433 mm)
-E042.5 J/cm2 (1542 nm, 10 ns, 10 Hz, Ø0.181 mm)

Damage Threshold Data for Thorlabs' Broadband Dielectric Mirrors

The specifications to the right are measured data for Thorlabs' broadband dielectric mirrors. Damage threshold specifications are constant for a given coating type, regardless of the size and shape of the mirror.

 

Laser Induced Damage Threshold Tutorial

This following is a general overview of how laser induced damage thresholds are measured and how the values may be utilized in determining the appropriateness of an optic for a given application. When choosing optics, it is important to understand the Laser Induced Damage Threshold (LIDT) of the optics being used. The LIDT for an optic greatly depends on the type of laser you are using. Continuous wave (CW) lasers typically cause damage from thermal effects (absorption either in the coating or in the substrate). Pulsed lasers, on the other hand, often strip electrons from the lattice structure of an optic before causing thermal damage. Note that the guideline presented here assumes room temperature operation and optics in new condition (i.e., within scratch-dig spec, surface free of contamination, etc.). Because dust or other particles on the surface of an optic can cause damage at lower thresholds, we recommend keeping surfaces clean and free of debris. For more information on cleaning optics, please see our Optics Cleaning tutorial.

Testing Method

Thorlabs' LIDT testing is done in compliance with ISO/DIS11254 specifications. A standard 1-on-1 testing regime is performed to test the damage threshold.

First, a low-power/energy beam is directed to the optic under test. The optic is exposed in 10 locations to this laser beam for a set duration of time (CW) or number of pulses (prf specified). After exposure, the optic is examined by a microscope (~100X magnification) for any visible damage. The number of locations that are damaged at a particular power/energy level is recorded. Next, the power/energy is either increased or decreased and the optic is exposed at 10 new locations. This process is repeated until damage is observed. The damage threshold is then assigned to be the highest power/energy that the optic can withstand without causing damage. A histogram such as that below represents the testing of one BB1-E02 mirror.

LIDT metallic mirror
The photograph above is a protected aluminum-coated mirror after LIDT testing. In this particular test, it handled 0.43 J/cm2 (1064 nm, 10 ns pulse, 10 Hz, Ø1.000 mm) before damage.
LIDT BB1-E02
Example Test Data
Fluence# of Tested LocationsLocations with DamageLocations Without Damage
1.50 J/cm210010
1.75 J/cm210010
2.00 J/cm210010
2.25 J/cm21019
3.00 J/cm21019
5.00 J/cm21091

According to the test, the damage threshold of the mirror was 2.00 J/cm2 (532 nm, 10 ns pulse, 10 Hz, Ø0.803 mm). Please keep in mind that it is only representative of one coating run and that Thorlabs' specified damage thresholds account for coating variances.

Continuous Wave and Long-Pulse Lasers

When an optic is damaged by a continuous wave (CW) laser, it is usually due to the melting of the surface as a result of absorbing the laser's energy or damage to the optical coating (antireflection) [1]. Pulsed lasers with pulse lengths longer than 1 µs can be treated as CW lasers for LIDT discussions. Additionally, when pulse lengths are between 1 ns and 1 µs, LIDT can occur either because of absorption or a dielectric breakdown (must check both CW and pulsed LIDT). Absorption is either due to an intrinsic property of the optic or due to surface irregularities; thus LIDT values are only valid for optics meeting or exceeding the surface quality specifications given by a manufacturer. While many optics can handle high power CW lasers, cemented (e.g., achromatic doublets) or highly absorptive (e.g., ND filters) optics tend to have lower CW damage thresholds. These lower thresholds are due to absorption or scattering in the cement or metal coating.

Linear Power Density Scaling

LIDT in linear power density vs. pulse length and spot size. For long pulses to CW, linear power density becomes a constant with spot size. This graph was obtained from [1].

Intensity Distribution

Pulsed lasers with high pulse repetition frequencies (PRF) may behave similarly to CW beams. Unfortunately, this is highly dependent on factors such as absorption and thermal diffusivity, so there is no reliable method for determining when a high PRF laser will damage an optic due to thermal effects. For beams with a large PRF both the average and peak powers must be compared to the equivalent CW power. Additionally, for highly transparent materials, there is little to no drop in the LIDT with increasing PRF.

In order to use the specified CW damage threshold of an optic, it is necessary to know the following:

  1. Wavelength of your laser
  2. Linear power density of your beam (total power divided by 1/e2 spot size)
  3. Beam diameter of your beam (1/e2)
  4. Approximate intensity profile of your beam (e.g., Gaussian)

The power density of your beam should be calculated in terms of W/cm. The graph to the right shows why the linear power density provides the best metric for long pulse and CW sources. Under these conditions, linear power density scales independently of spot size; one does not need to compute an adjusted LIDT to adjust for changes in spot size. This calculation assumes a uniform beam intensity profile. You must now consider hotspots in the beam or other nonuniform intensity profiles and roughly calculate a maximum power density. For reference, a Gaussian beam typically has a maximum power density that is twice that of the uniform beam (see lower right).

Now compare the maximum power density to that which is specified as the LIDT for the optic. If the optic was tested at a wavelength other than your operating wavelength, the damage threshold must be scaled appropriately. A good rule of thumb is that the damage threshold has a linear relationship with wavelength such that as you move to shorter wavelengths, the damage threshold decreases (i.e., a LIDT of 10 W/cm at 1310 nm scales to 5 W/cm at 655 nm). While this rule of thumb provides a general trend, it is not a quantitative analysis of LIDT vs wavelength. In CW applications, for instance, damage scales more strongly with absorption in the coating and substrate, which does not necessarily scale well with wavelength. While the above procedure provides a good rule of thumb for LIDT values, please contact Tech Support if your wavelength is different from the specified LIDT wavelength. If your power density is less than the adjusted LIDT of the optic, then the optic should work for your application.

Please note that we have a buffer built in between the specified damage thresholds online and the tests which we have done, which accommodates variation between batches. Upon request, we can provide individual test information and a testing certificate. The damage analysis will be carried out on a similar optic (customer's optic will not be damaged). Testing may result in additional costs or lead times. Contact Tech Support for more information.

Pulsed Lasers

As previously stated, pulsed lasers typically induce a different type of damage to the optic than CW lasers. Pulsed lasers often do not heat the optic enough to damage it; instead, pulsed lasers produce strong electric fields capable of inducing dielectric breakdown in the material. Unfortunately, it can be very difficult to compare the LIDT specification of an optic to your laser. There are multiple regimes in which a pulsed laser can damage an optic and this is based on the laser's pulse length. The highlighted columns in the table below outline the pulse lengths that our specified LIDT values are relevant for.

Pulses shorter than 10-9 s cannot be compared to our specified LIDT values with much reliability. In this ultra-short-pulse regime various mechanics, such as multiphoton-avalanche ionization, take over as the predominate damage mechanism [2]. In contrast, pulses between 10-7 s and 10-4 s may cause damage to an optic either because of dielectric breakdown or thermal effects. This means that both CW and pulsed damage thresholds must be compared to the laser beam to determine whether the optic is suitable for your application.

Pulse Durationt < 10-9 s10-9 < t < 10-7 s10-7 < t < 10-4 st > 10-4 s
Damage MechanismAvalanche IonizationDielectric BreakdownDielectric Breakdown or ThermalThermal
Relevant Damage SpecificationN/APulsedPulsed and CWCW

When comparing an LIDT specified for a pulsed laser to your laser, it is essential to know the following:

Energy Density Scaling

LIDT in energy density vs. pulse length and spot size. For short pulses, energy density becomes a constant with spot size. This graph was obtained from [1].

  1. Wavelength of your laser
  2. Energy density of your beam (total energy divided by 1/e2 area)
  3. Pulse length of your laser
  4. Pulse repetition frequency (prf) of your laser
  5. Beam diameter of your laser (1/e2 )
  6. Approximate intensity profile of your beam (e.g., Gaussian)

The energy density of your beam should be calculated in terms of J/cm2. The graph to the right shows why the energy density provides the best metric for short pulse sources. Under these conditions, energy density scales independently of spot size, one does not need to compute an adjusted LIDT to adjust for changes in spot size. This calculation assumes a uniform beam intensity profile. You must now adjust this energy density to account for hotspots or other nonuniform intensity profiles and roughly calculate a maximum energy density. For reference a Gaussian beam typically has a maximum power density that is twice that of the 1/e2 beam.

Now compare the maximum energy density to that which is specified as the LIDT for the optic. If the optic was tested at a wavelength other than your operating wavelength, the damage threshold must be scaled appropriately [3]. A good rule of thumb is that the damage threshold has an inverse square root relationship with wavelength such that as you move to shorter wavelengths, the damage threshold decreases (i.e., a LIDT of 1 J/cm2 at 1064 nm scales to 0.7 J/cm2 at 532 nm):

Pulse Wavelength Scaling

You now have a wavelength-adjusted energy density, which you will use in the following step.

Beam diameter is also important to know when comparing damage thresholds. While the LIDT, when expressed in units of J/cm2, scales independently of spot size; large beam sizes are more likely to illuminate a larger number of defects which can lead to greater variances in the LIDT [4]. For data presented here, a <1 mm beam size was used to measure the LIDT. For beams sizes greater than 5 mm, the LIDT (J/cm2) will not scale independently of beam diameter due to the larger size beam exposing more defects.

The pulse length must now be compensated for. The longer the pulse duration, the more energy the optic can handle. For pulse widths between 1 - 100 ns, an approximation is as follows:

Pulse Length Scaling

Use this formula to calculate the Adjusted LIDT for an optic based on your pulse length. If your maximum energy density is less than this adjusted LIDT maximum energy density, then the optic should be suitable for your application. Keep in mind that this calculation is only used for pulses between 10-9 s and 10-7 s. For pulses between 10-7 s and 10-4 s, the CW LIDT must also be checked before deeming the optic appropriate for your application.

Please note that we have a buffer built in between the specified damage thresholds online and the tests which we have done, which accommodates variation between batches. Upon request, we can provide individual test information and a testing certificate. Contact Tech Support for more information.


[1] R. M. Wood, Optics and Laser Tech. 29, 517 (1997).
[2] Roger M. Wood, Laser-Induced Damage of Optical Materials (Institute of Physics Publishing, Philadelphia, PA, 2003).
[3] C. W. Carr et al., Phys. Rev. Lett. 91, 127402 (2003).
[4] N. Bloembergen, Appl. Opt. 12, 661 (1973).

Click the Support Documentation icon document icon or Part Number below to view the available support documentation
Part Number Product Description
BB05-E01 Support Documentation BB05-E01 : Ø1/2" Broadband Dielectric Mirror, 350-400 nm
BB05-E01-10 Support Documentation BB05-E01-10 : 10 Pack of ؽ" Broadband Dielectric Mirrors, 350-400 nm
BB05-E02 Support Documentation BB05-E02 : Ø1/2" Broadband Dielectric Mirror, 400-750 nm
BB05-E02-10 Support Documentation BB05-E02-10 : 10 Pack of ؽ" Broadband Dielectric Mirrors, 400-750 nm
BB05-E03 Support Documentation BB05-E03 : Ø1/2" Broadband Dielectric Mirror, 750-1100 nm
BB05-E03-10 Support Documentation BB05-E03-10 : 10 Pack of ؽ" Broadband Dielectric Mirrors, 750-1100 nm
BB05-E04 Support Documentation BB05-E04 : Ø1/2" Broadband Dielectric Mirror, 1280-1600 nm
BB05-E04-10 Support Documentation BB05-E04-10 : 10 Pack of ؽ" Broadband Dielectric Mirrors, 1280-1600 nm
BB07-E01 Support Documentation BB07-E01 : Ø19.0 mm Broadband Dielectric Mirror, 350-400 nm
BB07-E02 Support Documentation BB07-E02 : Ø19.0 mm Broadband Dielectric Mirror, 400-750 nm
BB07-E03 Support Documentation BB07-E03 : Ø19.0 mm Broadband Dielectric Mirror, 750-1100 nm
BB07-E04 Support Documentation BB07-E04 : Ø19.0 mm Broadband Dielectric Mirror, 1280-1600 nm
BB1-E01 Support Documentation BB1-E01 : Ø1" Broadband Dielectric Mirror, 350-400 nm
BB1-E01-10 Support Documentation BB1-E01-10 : 10 Pack of Ø1" Broadband Dielectric Mirrors, 350-400 nm
BB1-E02 Support Documentation BB1-E02 : Ø1" Broadband Dielectric Mirror, 400-750 nm
BB1-E02-10 Support Documentation BB1-E02-10 : 10 Pack of Ø1" Broadband Dielectric Mirrors, 400-750 nm
BB1-E03 Support Documentation BB1-E03 : Ø1" Broadband Dielectric Mirror, 750-1100 nm
BB1-E03-10 Support Documentation BB1-E03-10 : 10 Pack of Ø1" Broadband Dielectric Mirrors, 750-1100nm
BB1-E04 Support Documentation BB1-E04 : Ø1" Broadband Dielectric Mirror, 1280-1600 nm
Part Number Product Description
BB1-E04-10 Support Documentation BB1-E04-10 : 10 Pack of Ø1" Broadband Dielectric Mirrors, 1280-1600 nm
BB2-E01 Support Documentation BB2-E01 : Ø2" Broadband Dielectric Mirror, 350-400 nm
BB2-E01-10 Support Documentation BB2-E01-10 : 10 Pack of Ø2" Broadband Dielectric Mirrors, 350-400 nm
BB2-E02 Support Documentation BB2-E02 : Ø2" Broadband Dielectric Mirror, 400-750 nm
BB2-E02-10 Support Documentation BB2-E02-10 : 10 Pack of Ø2" Broadband Dielectric Mirrors, 400-750 nm
BB2-E03 Support Documentation BB2-E03 : Ø2" Broadband Dielectric Mirror, 750-1100 nm
BB2-E03-10 Support Documentation BB2-E03-10 : 10 Pack of Ø2" Broadband Dielectric Mirrors, 750-1100 nm
BB2-E04 Support Documentation BB2-E04 : Ø2" Broadband Dielectric Mirror, 1280-1600 nm
BB2-E04-10 Support Documentation BB2-E04-10 : 10 Pack of Ø2" Broadband Dielectric Mirrors, 1280-1600 nm
BB3-E02 Support Documentation BB3-E02 : Ø3" Broadband Dielectric Mirror, 400-750 nm
BB3-E03 Support Documentation BB3-E03 : Ø3" Broadband Dielectric Mirror, 750-1100 nm
BB4-E02 Support Documentation BB4-E02 : Ø4" Broadband Dielectric Mirror, 400-750 nm
BB4-E03 Support Documentation BB4-E03 : Ø4" Broadband Dielectric Mirror, 750-1100 nm
BBSQ05-E02 Support Documentation BBSQ05-E02 : 1/2" x 1/2" Square Broadband Dielectric Mirror, 400-750 nm
BBSQ05-E03 Support Documentation BBSQ05-E03 : 1/2" x 1/2" Square Broadband Dielectric Mirror, 750-1100 nm
BBSQ1-E02 Support Documentation BBSQ1-E02 : 1" x 1" Square Broadband Dielectric Mirror, 400-750 nm
BBSQ1-E03 Support Documentation BBSQ1-E03 : 1" x 1" Square Broadband Dielectric Mirror, 750-1100 nm
BBSQ2-E02 Support Documentation BBSQ2-E02 : 2" x 2" Square Broadband Dielectric Mirror, 400-750 nm
BBSQ2-E03 Support Documentation BBSQ2-E03 : 2" x 2" Square Broadband Dielectric Mirror, 750-1100 nm

Please Give Us Your Feedback
 
Email   Feedback On
(Optional)
Contact Me:
Your email address will NOT be displayed.
 
 
Please type the following key into the field to submit this form:
Click Here if you can not read the security code.
This code is to prevent automated spamming of our site
Thank you for your understanding.
  
 
Would this product be useful to you?       Little Use    1 2 3 4 Very Useful

Enter Comments Below:
 
Characters remaining 8000    
Posted Comments:
Poster: cdaly
Posted Date: 2014-04-08 06:55:49.0
Response from Chris at Thorlabs: Thank you for your feedback. We do not sell this as a stock item at the moment, but we can provide it as a custom. I will contact you directly about this.
Poster: falk.eilenberger
Posted Date: 2014-04-07 14:56:02.37
Do you also sell the E04 dielectric mirror type in 2x2 inch square? Thanks a lot in advance Falk Eilenberger
Poster: besembeson
Posted Date: 2014-03-27 02:41:28.0
Response from Bweh E at Thorlabs: It is possible to have this on silicon wafers. The typical substrates that we use have surface flatness of ?/10. One concern is that with the silicon wafer, this will be much worse and this will greatly add to the waveform distortion. I will email you for further details and quantity if you are still interested in getting this quoted.
Poster: philipp.tonndorf
Posted Date: 2014-03-21 12:06:16.88
Hello, is it possible to get the dielectric mirrors on a thinner subtrate (< 1mm), for example a silicon wafer? best regards Philipp
Poster: kielhorn.martin
Posted Date: 2013-06-05 12:30:09.527
We are planning to use these mirrors in an interferometer. Can you give information on the phase shift in the E02 coating between s- and p-polarized light (for a wavelength of 532 nm and an angle of incidence of 45 degree)?
Poster: tcohen
Posted Date: 2013-06-06 15:21:00.0
Response from Tim at Thorlabs: We have found that the relative phase shift of dielectric mirrors can deviate from lot to lot and from theory more than either metallic mirrors or dielectrics that are specifically designed with this parameter in mind. I will contact you with our data to discuss this further.
Poster: yuns.jeon
Posted Date: 2013-06-05 01:25:41.003
Could you provide of a 2" square mirror with E01 coating? I can see only E02 and E03 for 2" square mirrors. Please contact me, _Yunseong
Poster: tcohen
Posted Date: 2013-06-06 15:19:00.0
Response from Tim at Thorlabs: Thank you for your request. I will contact you directly to prepare a quote.
Poster: john.f.burris
Posted Date: 2013-01-24 12:33:54.403
Do you folks do custom coatings for broadband dielectric mirrors? We'd like R>99% for 280-300nm with T<30% at 266nm. Angle of incidence = 45 degrees. S & P polarization. 1" diameter. John Burris
Poster: tcohen
Posted Date: 2013-01-30 13:17:00.0
Response from Tim at Thorlabs to John: Thank you for contacting us. We can provide some custom coatings. The lot cost is typically divided into quantity, so pricing/pc does become more competitive as the chamber fills up. I will contact you directly to discuss your coating.
Poster: krzychu1
Posted Date: 2012-10-10 10:53:28.763
Hi, I am going to use the E03 coating for Ti:Sapphire laser (routing mirrors to my set-up) Please send my some information about the GVD of the E03 coating.
Poster: tcohen
Posted Date: 2012-04-11 11:26:00.0
Response from Tim at Thorlabs: For our –E02 coating we have a theoretical LIDT specification at 532nm of 1MW/cm^2 CW (1mm beam). Please use this number as a reference but remember that it will vary based on surface quality, contaminants, intensity profile, wavelength and other factors.
Poster: paul.lauria
Posted Date: 2012-04-05 14:12:32.0
Can you let me know what the CW damage threshold is for E02 coated optics? And the exposure time you used? Thanks.
Poster: bdada
Posted Date: 2012-02-20 14:12:00.0
Response from Buki at Thorlabs: Thank you for your feedback. We are able to provide dispersion curves for these coatings. We do not have your contact information, but please send an email to Techsupport@thorlabs.com to request the data.
Poster:
Posted Date: 2012-02-17 15:55:30.0
Hi, I wonder if there's dispersion curve plots (GDD vs wavelength) for these coatings. It would also be helpful to have the know the material and thickness of the multilayer coatings (perhaps an index versus distance from the blank mirror plot?).
Poster: bdada
Posted Date: 2011-11-16 12:25:00.0
Response from Buki at Thorlabs: Thank you for your feedback. The circular polarization is maintained at 0 degrees, but not at 45 degrees AOI. We have contacted you to discuss further.
Poster: lmorgus
Posted Date: 2011-11-10 08:40:00.0
Response from Laurie at Thorlabs to the anonymous poster: Thank you for your feedback concerning our raw reflectivity data, which is linked under the specs tab. I've looked into this. It appears like all the raw data (E01, E02, E03, and E04) is in the attached file, but unfortunately, when you open it, only the E03 data is in view, which definitely leads to confusion. If you zoom out, you should be able to see all the data. However, there is definitely room for improvement in the way we present this data. Hence, we will update the link today so that each coating's data appears on a separate tab. I apologize for the inconvenience the current format caused and thank you for taking the time to help us improve our presentation so that others can find this information more efficiently.
Poster:
Posted Date: 2011-11-10 08:12:22.0
Your links to Reflectivity plot data all appear to link to E03 AOI 45 deg and E04 AOI 0 & 45 deg data - no link appears E01/E02 reflectivity data.
Poster: martin.vogel
Posted Date: 2011-11-04 20:13:21.0
Following up on the question asked by thierry.taillandier-loize: Is circular polarisation maintained at 45 degrees AOI? Sorry for the double posting, but this was not 100% clear from the previous reply.
Poster: bdada
Posted Date: 2011-10-10 15:06:00.0
Response from Buki at Thorlabs: Thank you for using our Feedback tool. We have contacted you with the GVD data. Please contact TechSupport@thorlabs.com if you have further questions.
Poster: nomis.fischer
Posted Date: 2011-10-10 08:41:15.0
Dear Thorlabs Team, could you please send me the GVD curve for the E03 mirrors. Thank you in advance. S.F.
Poster: bdada
Posted Date: 2011-08-25 13:03:00.0
Response from Buki at Thorlabs: We have contacted you with a theoretical GVD curve of our E03 mirrors. Please contact TechSupport@thorlabs.com if you have additional questions.
Poster: br
Posted Date: 2011-08-24 10:52:21.0
Dear Thorlabs Team, Could you please send me the dispersion curve for the BB2-E03 type of mirror? Thanks in advance, Bojan Resan
Poster: jjurado
Posted Date: 2011-05-18 17:19:00.0
Response from Javier at Thorlabs to olsonaj: Thank you very much for contacting us with your request. Although we have not rigorously tested the E03 coated mirrors for CW LIDT, we do know that this optic has been exposed to a power density of ~9 MW/cm^2 (30 um spot size, 1064 nm laser)without damage. AT 780 nm, we can estimate that the damage threshold will be lower by about 25%. I will discuss adding the different damage modes to the LIDT specs with our optics design engineers. In the meantime, I will contact you for discussing the LIDT specifications of any particular optics you may be interested in.
Poster: olsonaj
Posted Date: 2011-05-18 09:23:05.0
I am wondering the CW damage threshold (specifically at 780nm) for this optic. Also, in general it is difficult to find the CW damage threshold for many of your optics parts on the website (e.g. cube PBSs, lenses). Could you list them alongside the LIDT for pulsed lasers? It makes sense to me to include both. Additionally, itd be helpful to know when its the cement (in the case of PBSs and achromatic lenses) thats damaged, vs the optical coating, vs the actual optical element. Thanks, -Abe
Poster: jjurado
Posted Date: 2011-04-04 15:56:00.0
Response from Javier at Thorlabs to thierry.taillandier-loize: Thank you very much for contacting us with your request. Circular polarization is maintained upon reflection; however, the handedness is reversed (i.e. right-handed circularly polarized light changes to left-handed circularly polarized light and vice versa.) I will contact you directly for further assistance.
Poster: thierry.taillandier-loize
Posted Date: 2011-04-04 18:15:59.0
I would like to know if the given reflectivity with a 45° AOI for a s polarisation ligth means that the circular polarisation is maintained ? Thanks
Poster: jjurado
Posted Date: 2011-02-17 11:41:00.0
Response from Javier at Thorlabs to sp.yoon: Thank you for contacting us with your request. We specify a damage threshold of 0.5 J/cm^2 for the E03 dielectric coated mirrors under the following conditions: Wavelength = 1064 nm Pulse width = 10 ns Pulse repetition rate = 10 Hz Beam diameter = Ø0.433 mm Since the pulse width and the beam diameter of your source are different, we have to scale the laser induced damage threshold (LIDT) value. If you refer to the Damage Thresholds tab, you will see that we show a few equations for scaling wavelength, pulse width, and beam diameter. I applied your values to these equations and calculated an LIDT value of ~17 J/cm^2 for our E03 lenses under the parameters you describe. The output energy density of your laser is 0.7J/cm^2, so our lenses should work. I will contact directly with these calculations.
Poster: sp.yoon
Posted Date: 2011-02-16 20:48:57.0
Hi! I am Sangpil Yoon and would like to buy two kinds of mirrors. They are: 1. BB1-E03 - Ø1" Broadband Dielectric Mirror, 750-1100 nm 2 .BB2-E03 - Ø2" Broadband Dielectric Mirror, 750-1100 nm My laser is 1064 nm Porais II and PRF is almost zero because I use it just 1 shot intervals of several minutes. Pulse width is 4-5 ns and beam diameter is 3mm and maximum energy is 50 mJ. Would items 1 and 2 be damaged or be OK. Thank you.
Poster: tor
Posted Date: 2010-11-15 18:04:03.0
A response from Tor at Thorlabs to Lars: While average reflectivity will be maximized for AOI = [0,45] degrees, the -E02 and -E03 coatings are designed to provide optimal performance along the ranges [400, 750]nm and [750, 1100]nm, respectively. Therefore, these mirrors may not be suitable for your intended wavelength range. I will contact you directly regarding your reflectivity specifications to identify an appropriate solution.
Poster: lars-erik.nilsson
Posted Date: 2010-11-15 09:24:49.0
In an instrument we are going to use broadband mirrors 540 nm to 900 nm at nominal an AOI of 45 degrees. High reflectivity is of prime importande so I am looking at dielectric instead of (protected) silver mirrors. My question is how will these mirrors perform at angle outside 45 degrees since we have an aperture of our system of +/-4 degrees. I.e some rays will have to be reflected from an AOI of 49 degrees. How will this affect reflectivity over the range?
Poster: Adam
Posted Date: 2010-04-23 15:37:50.0
A response from Adam at Thorlabs to w.prins: We do have some typical data that we can provide. Please note that the performance of the coating is rather inconsistent outside the designated range and we cannot guarantee that your mirror will perform as the data suggests. I will send this data to you via email.
Poster: w.prins
Posted Date: 2010-04-23 10:09:18.0
I would like to have the transmission graph in the visible range, is this possible?
Poster: Adam
Posted Date: 2010-04-21 14:51:14.0
A response from Adam at Thorlabs to iddoheller: We currently test the mirrors up to 50 degrees C so we cannot guarantee performance at 100 degrees. However, we do not feel the coating will come off at 100 degrees C and can provide you with a sample for testing.
Poster: iddoheller
Posted Date: 2010-04-21 09:34:44.0
Can the BB1-E03 coated mirror withstand heating up to 100 degrees Celsius in ambient air?
Poster: apalmentieri
Posted Date: 2009-12-15 09:27:34.0
A response from Adam at Thorlabs: I am currently working on getting this information. Since we do not offer the BB1-E04 with a polished back surface we do not have experimental data on hand. We will try to get theoretical information as soon as possible. Please note since this is outside the designated coating range, there is a chance that the theoretical information may not match every coating run exactly. The coatings are created by stacking different dielectric materials on top of one another. The thickness of these layers and number of layers create the %R for a specified wavelength range. The coatings are only optimized for these specified ranges. The %R and %T data outside of the specified wavelength range is subject to change with every coating run. As soon as we have the data, we will send it to your email address immediately.
Poster: wonna
Posted Date: 2009-12-15 06:28:44.0
How does the transmission spectrum for E04 coating with 45 degrees AOI? Actually I want to know the transmission at the wavelength range from 700 nm to 1000 nm. Thank you.
Poster: apalmentieri
Posted Date: 2009-06-16 18:13:01.0
A response from Adam at Thorlabs: I believe you would like to use the E03 to combine a 1.06um and 355nm beam. Is this correct? If that is correct, it is tough to predice the preformance below 750nm. The %R from wavelengths outside of the specified range is not constant and will vary from coating run to coating run. Therefore, it is tough to guarantee that this mirror will work for your application. Also, these coatings have very complex mulitlayer dielectic coatings, with more than 50 layers which have very strong effects on the transmitted beams. Both the wavefront and the polarization is often scrambled on the transmitted beam. This may or may not be of a concern, but I thought I would mention it. I will email you the data that we currently can provide. If you have further questions or concerns, please let me know.
Poster: kdooley
Posted Date: 2009-06-16 15:50:35.0
I am looking for a mirror that will allow me to combine a 10.6 micron beam with a 355 nm beam. I was wondering if the e03 coating used on these mirrors would transmit the 355nm so that I can use this optic as a dichroic mirror?
Poster: Tyler
Posted Date: 2009-04-13 15:49:43.0
A response from Tyler at Thorlabs to srubin: I will email you the data that you have requested but I do not recommend using it to determine the exact cutoff wavelength for the E02 mirror coating. Variations in each coating run can cause the cutoff wavelength to vary without significantly affecting the reflectivity in the specified region. If you provide me with some of the details/requirements of your application, perhaps I can provide a solution. Thank you for shopping at Thorlabs.
Poster: srubin
Posted Date: 2009-04-12 16:05:33.0
trying to find the exact cutoff of the E02 coating. would be useful to have either a high res plot available or to download the data of the typical plot
Poster: Tyler
Posted Date: 2008-06-04 09:05:13.0
A response from Tyler at Thorlabs to mzondlo: As requested, the reflectivity curve for a 0 degree angle of incidence has been added to the "Reflectivity Plots" tab. Thank you for taking the time to enter the feedback. Please continue to use this feedback mechanism to ask for more information about existing products, suggest new products that are needed in your lab, or to comment on or relate your experiences with the products you are currently using.
Poster:
Posted Date: 2008-04-28 00:26:33.0
How does the reflectivity curve changes for 0 degrees angle of incidence on these mirrors? It would be helpful if you add the 45 and 0 degree reflectivity curve together in the plot.
Poster: Laurie
Posted Date: 2008-04-23 08:07:04.0
Response from Laurie @ Thorlabs to ulbricht: Thank you for your inquiry. Thorlabs would be able to provide you with such a product. One of our application engineers will be contacting you shortly to discuss the specifics such as quantity.
Poster: ulbricht
Posted Date: 2008-04-23 06:19:13.0
Can you also offer mirrors on substrates that are polished on both sides? What would they cost?
Poster: mzondlo
Posted Date: 2008-03-27 16:22:16.0
What is the reflectivity plot versus wavelength for unpolarized light at 0 degrees angel of incidence for the broadband dielectric-coated mirrors?
Poster: technicalmarketing
Posted Date: 2008-02-07 09:19:57.0
In response to acables post, we have added the thickness for these mirrors to the specs tab.
Poster: acable
Posted Date: 2008-02-06 09:06:27.0
Please add the thickness of the mirrors to the Specs tab.
Poster: TechnicalMarketing
Posted Date: 2007-10-15 08:44:44.0
The drawings for the individual mirrors that make up each package of 10 mirrors has been attached and can now be accessed via the documents and drawings tab. Thank you for taking the time to provide Thorlabs with your feedback.
Poster: jmills
Posted Date: 2007-10-11 08:28:51.0
Maybe you could attach the drawings to kits as well?
Poster: TechnicalMarketing
Posted Date: 2007-10-09 10:00:06.0
Dear Acable, Thank you for your comments on this page. A plot of all the reflectivity of all four mirrors was added to the overview tab so that it is easy to visually determine the effective spectral range of each mirror coating. We also specified the percent savings that is given when the mirrors are purchased in packages of 10. Although it was not added to the page, currently each mirror in the package of ten is shipped in individual boxs. However, within the next couple of months new packaging will be phased in that will securely package all 10 mirrors in the same box. Since the packaging material is not a product specification it can change without notice and as a result it is not something that we specify on our web pages. However, if the way the mirrors are packaged is important to your application, please contact technical support to discuss your packaging needs. We also had the feedback window redesigned to be less confusing. Thank you again for your excellent suggestions.
Poster: acable
Posted Date: 2007-10-08 08:22:46.0
Please specify the percent savings in the header for the price box on the mirror packages. Also note if the mirrors are bulk packaged or does each optic come with its own box. Please add on large plot at the bottom of the plots tab that shows all the mirrors on one plot. If having 3 traces per mirror is too much please indicate the worst polarization on one and then the best on another. I guess i will input the code key into the input box labeled 'Reload', should i know what Reload means in this context, have to admit that i do not.”
Click on any phrase below to search our site using our new Search Engine:
0.75 inch optic   0.75 mirror   0.75" optic   01   02   03   04   ½ optic   1 2 inch mirror   1 2 inch optic   1 2 mirror   1 2 optic   1 inch mirror   1 inch optic   1 mirror   1 optic   10 pack of mirrors   100 mm mirror   100 mm optic   100mm mirror   100mm optic   12.7 mm mirror   12.7 mm optic   12.7mm mirror   12.7mm optic   19 mm mirror   19 mm optic   2 diameter mirror   2 inch diameter mirror   2 inch mirror   2 inch optic   2 mirror   2 optic   25 mm mirror   25 mm optic   25mm mirror   25mm optic   3 diameter   3 inch diameter   3 inch mirror   3 inch mirrors   3 inch optic   3 mirror   3 optic   3/4 inch mirror   3/4"e; mirror   4 diameter   4 inch diameter   4 inch mirror   4 inch mirrors   4 inch optic   4 mirror   4 mirrors   4 optic   50 mm mirror   50 mm optic   50mm mirror   50mm optic   75 mm mirror   75 mm optic   75mm mirror   75mm optic   broadband dielectric mirror   broadband dielectric mirrors   broadband mirror   broadband mirrors   dichroic mirror   dielectric mirror   dielectric mirrors   discount mirror   e   E01   e02   e03   e04   eo1   eo2   eo3   eo4   IR coatin   IR dielectric coating   IR mirror   laser mirror   laser mirrors   laser quality   laser quality mirror   mirror   mirror ir   mirror kits   mirror packages   mirroras   mirrors   NIR dielectric coating   NIR mirror   o1   o2   o3   o4   optical mirror   optics mirror   package of mirrors   packages of mirrors   periscope   reflector   round mirror   square mirror   uv dielectric coating   uv mirror   visible dielectric coating   visible mirror   volume discount   volume mirrors  

1/2" Broadband Dielectric Mirrors

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
BB05-E01 Support Documentation
BB05-E01 Ø1/2" Broadband Dielectric Mirror, 350-400 nm
$85.00
Today
BB05-E02 Support Documentation
BB05-E02 Ø1/2" Broadband Dielectric Mirror, 400-750 nm
$49.40
Today
BBSQ05-E02 Support Documentation
BBSQ05-E02 1/2" x 1/2" Square Broadband Dielectric Mirror, 400-750 nm
$49.10
Today
BB05-E03 Support Documentation
BB05-E03 Ø1/2" Broadband Dielectric Mirror, 750-1100 nm
$49.40
Today
BBSQ05-E03 Support Documentation
BBSQ05-E03 1/2" x 1/2" Square Broadband Dielectric Mirror, 750-1100 nm
$49.10
Today
BB05-E04 Support Documentation
BB05-E04 Ø1/2" Broadband Dielectric Mirror, 1280-1600 nm
$78.00
Today

Ø19 mm Broadband Dielectric Mirrors

These Ø19 mm mirrors are specifically designed to fit our Polaris Fixed Optic Mounts for laser system design and other OEM applications. This diameter provides a larger clear aperture than Ø1/2" optics while allowing the mounts to maintain a Ø1" footprint.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
BB07-E01 Support Documentation
BB07-E01 NEW! Ø19.0 mm Broadband Dielectric Mirror, 350-400 nm
$110.00
Today
BB07-E02 Support Documentation
BB07-E02 NEW! Ø19.0 mm Broadband Dielectric Mirror, 400-750 nm
$65.00
Today
BB07-E03 Support Documentation
BB07-E03 NEW! Ø19.0 mm Broadband Dielectric Mirror, 750-1100 nm
$65.00
Today
BB07-E04 Support Documentation
BB07-E04 NEW! Ø19.0 mm Broadband Dielectric Mirror, 1280-1600 nm
$105.00
Today

1" Broadband Dielectric Mirrors

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
BB1-E01 Support Documentation
BB1-E01 Ø1" Broadband Dielectric Mirror, 350-400 nm
$125.00
Today
BB1-E02 Support Documentation
BB1-E02 Ø1" Broadband Dielectric Mirror, 400-750 nm
$75.10
Today
BBSQ1-E02 Support Documentation
BBSQ1-E02 1" x 1" Square Broadband Dielectric Mirror, 400-750 nm
$75.10
Today
BB1-E03 Support Documentation
BB1-E03 Ø1" Broadband Dielectric Mirror, 750-1100 nm
$75.10
Today
BBSQ1-E03 Support Documentation
BBSQ1-E03 1" x 1" Square Broadband Dielectric Mirror, 750-1100 nm
$75.10
Today
BB1-E04 Support Documentation
BB1-E04 Ø1" Broadband Dielectric Mirror, 1280-1600 nm
$120.00
Today

2" Broadband Dielectric Mirrors

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
BB2-E01 Support Documentation
BB2-E01 Ø2" Broadband Dielectric Mirror, 350-400 nm
$300.00
Today
BB2-E02 Support Documentation
BB2-E02 Ø2" Broadband Dielectric Mirror, 400-750 nm
$146.00
Today
BBSQ2-E02 Support Documentation
BBSQ2-E02 2" x 2" Square Broadband Dielectric Mirror, 400-750 nm
$162.80
Today
BB2-E03 Support Documentation
BB2-E03 Ø2" Broadband Dielectric Mirror, 750-1100 nm
$146.00
Today
BBSQ2-E03 Support Documentation
BBSQ2-E03 2" x 2" Square Broadband Dielectric Mirror, 750-1100 nm
$162.80
Today
BB2-E04 Support Documentation
BB2-E04 Ø2" Broadband Dielectric Mirror, 1280-1600 nm
$230.00
Today

Ø3" Broadband Dielectric Mirrors

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
BB3-E02 Support Documentation
BB3-E02 Ø3" Broadband Dielectric Mirror, 400-750 nm
$385.00
Today
BB3-E03 Support Documentation
BB3-E03 Ø3" Broadband Dielectric Mirror, 750-1100 nm
$385.00
Today

Ø4" Broadband Dielectric Mirrors

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
BB4-E02 Support Documentation
BB4-E02 Ø4" Broadband Dielectric Mirror, 400-750 nm
$690.00
Today
BB4-E03 Support Documentation
BB4-E03 Ø4" Broadband Dielectric Mirror, 750-1100 nm
$690.00
Today

Mirror Packages

  • 10% Savings Over Individual Piece Prices
  • Choose from Three Sizes
  • Four Different HR Broadband Coatings Available
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
BB05-E01-10 Support Documentation
BB05-E01-10 10 Pack of ؽ" Broadband Dielectric Mirrors, 350-400 nm
$765.00
Today
BB05-E02-10 Support Documentation
BB05-E02-10 10 Pack of ؽ" Broadband Dielectric Mirrors, 400-750 nm
$444.60
Today
BB05-E03-10 Support Documentation
BB05-E03-10 10 Pack of ؽ" Broadband Dielectric Mirrors, 750-1100 nm
$444.60
Today
BB05-E04-10 Support Documentation
BB05-E04-10 10 Pack of ؽ" Broadband Dielectric Mirrors, 1280-1600 nm
$702.00
Today
BB1-E01-10 Support Documentation
BB1-E01-10 10 Pack of Ø1" Broadband Dielectric Mirrors, 350-400 nm
$1,125.00
Today
BB1-E02-10 Support Documentation
BB1-E02-10 10 Pack of Ø1" Broadband Dielectric Mirrors, 400-750 nm
$675.90
3-5 Days
BB1-E03-10 Support Documentation
BB1-E03-10 10 Pack of Ø1" Broadband Dielectric Mirrors, 750-1100nm
$675.90
Today
BB1-E04-10 Support Documentation
BB1-E04-10 10 Pack of Ø1" Broadband Dielectric Mirrors, 1280-1600 nm
$1,080.00
Today
BB2-E01-10 Support Documentation
BB2-E01-10 10 Pack of Ø2" Broadband Dielectric Mirrors, 350-400 nm
$2,700.00
Today
BB2-E02-10 Support Documentation
BB2-E02-10 10 Pack of Ø2" Broadband Dielectric Mirrors, 400-750 nm
$1,314.00
Today
BB2-E03-10 Support Documentation
BB2-E03-10 10 Pack of Ø2" Broadband Dielectric Mirrors, 750-1100 nm
$1,314.00
Today
BB2-E04-10 Support Documentation
BB2-E04-10 10 Pack of Ø2" Broadband Dielectric Mirrors, 1280-1600 nm
$2,070.00
Today
Log In   |   My Account  |   Contact Us  |   Privacy Policy  |   Home  |   Site Index
Regional Websites: West Coast US | Europe | Asia | China | Japan
Copyright 1999-2014 Thorlabs, Inc.
Sales: 1-973-579-7227
Technical Support: 1-973-300-3000


High Quality Thorlabs Logo 1000px: Save this Image