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Economy Film Polarizers


  • Polarizing Film Between Two AR-Coated N-BK7 Windows
  • Designed for 400 - 700 nm, 600 - 1100 nm, or 1050 - 1700 nm
  • Three Sizes: Ø1/2", Ø1", and Ø2"

LPNIRE200-B

(Ø2")

LPIREA100-C

(Ø1")

LPVISE050-A

(Ø1/2")

Application Idea

LPVISE050-A Ø1/2" Polarizer
in a PRM05 Optic Mount

Related Items


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Common Specifications
Polarizing Material Dichroic Film
Window Material N-BK7
Clear Aperture >90% of Diameter
Surface Quality 60-40 Scratch-Dig
Wavefront Distortion 1.5λ Over Clear Aperture
Acceptance Angle ±30°
Linear Polarizer Ray Tracing
The direction of output polarization is marked on the edge of each polarizer.
Polarizer with Polymer Waveplate
Click to Enlarge

One Ø2" polarizer linearly polarizes incoming light before a Ø2" Polymer Zero-Order Wave Plate converts it to an elliptical polarization state. Each optic is mounted in an LCRM2 cage rotation mount.

Features

  • Dichroic Polarizing Film Between Two AR-Coated N-BK7 Windows
  • Three Operating Wavelength Ranges Available:
    • 400 - 700 nm (-A Designation)
    • 600 - 1100 nm (-B Designation)
    • 1050 - 1700 nm (-C Designation)
  • High Acceptance Angle: ±30°

These glass polarizers have polarization efficiencies in excess of 99% (see the tables below for extinction ratio specifications). They provide high absorption of the rejected polarization, making them ideal for low-power applications. The polarizers are available in Ø1/2", Ø1", and Ø2" sizes and consist of a dichroic polarizing film sheet with a protective N-BK7 window epoxied onto each side of the film. Each window has one of three AR coatings deposited on the glass-to-air interface (see the tables below for AR coating specifications). We also offer 2" x 2" sheets of the dichroic polarizer for 400 - 700 nm without protective windows that are ideal for cutting custom sizes. The output polarization direction is marked with a line on the side of each polarizer (see schematic to the right).

These polarizers are sensitive to stress when mounting. Overtightening the retaining ring can cause stress-induced birefringence in both the glass and the assembly and can also reduce the extinction ratio of the optic. To ensure that the polarizer is not loose in the housing, we recommend the use of our Stress-Free Retaining Rings. The use of setscrew-based mounts is not recommended for these polarizers. While the polarizer's surfaces can be cleaned with normal solvents, take care to avoid the polarizer's edge.

Damage Threshold Specifications
Coating Designation
(Item # Suffix)
Damage Threshold
-A 1 W/cm (532 nm, CW, Ø0.471 mm)a
0.4 J/cm2 (532 nm, 10 ns, 10 Hz, Ø0.750 mm)
-B 1 W/cm (810 nm, CW, Ø0.004 mm)a
0.3 J/cm2 (810 nm, 10 ns, 10 Hz, Ø0.08 mm)
-C 1 W/cm (1542 nm, CW, Ø0.161 mm)a
2 J/cm2 (1540 nm, 10 ns, 10 Hz, Ø0.242 mm)
  • The power density of your beam should be calculated in terms of W/cm. For an explanation of why the linear power density provides the best metric for long pulse and CW sources, please see the "Continuous Wave and Long-Pulse Lasers" section below.

Damage Threshold Data for Thorlabs' Laminated Film Polarizers

The specifications to the right are measured data for Thorlabs' laminated thin film polarizers. Damage threshold specifications are constant for all of the polarizers with a given coating designation, regardless of the size of the optic.

 

Laser Induced Damage Threshold Tutorial

The 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 (pulse repetition frequency 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/cm2 10 0 10
1.75 J/cm2 10 0 10
2.00 J/cm2 10 0 10
2.25 J/cm2 10 1 9
3.00 J/cm2 10 1 9
5.00 J/cm2 10 9 1

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 these tests are performed on clean optics, as dirt and contamination can significantly lower the damage threshold of a component. While the test results are only representative of one coating run, Thorlabs specifies damage threshold values that 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):

CW Wavelength Scaling

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 relevant pulse lengths for our specified LIDT values.

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 Duration t < 10-9 s 10-9 < t < 10-7 s 10-7 < t < 10-4 s t > 10-4 s
Damage Mechanism Avalanche Ionization Dielectric Breakdown Dielectric Breakdown or Thermal Thermal
Relevant Damage Specification N/A Pulsed Pulsed and CW CW

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 energy 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).

In order to illustrate the process of determining whether a given laser system will damage an optic, a number of example calculations of laser induced damage threshold are given below. For assistance with performing similar calculations, we provide a spreadsheet calculator that can be downloaded by clicking the button to the right. To use the calculator, enter the specified LIDT value of the optic under consideration and the relevant parameters of your laser system in the green boxes. The spreadsheet will then calculate a linear power density for CW and pulsed systems, as well as an energy density value for pulsed systems. These values are used to calculate adjusted, scaled LIDT values for the optics based on accepted scaling laws. This calculator assumes a Gaussian beam profile, so a correction factor must be introduced for other beam shapes (uniform, etc.). The LIDT scaling laws are determined from empirical relationships; their accuracy is not guaranteed. Remember that absorption by optics or coatings can significantly reduce LIDT in some spectral regions. These LIDT values are not valid for ultrashort pulses less than one nanosecond in duration.

Intensity Distribution
A Gaussian beam profile has about twice the maximum intensity of a uniform beam profile.

CW Laser Example
Suppose that a CW laser system at 1319 nm produces a 0.5 W Gaussian beam that has a 1/e2 diameter of 10 mm. A naive calculation of the average linear power density of this beam would yield a value of 0.5 W/cm, given by the total power divided by the beam diameter:

CW Wavelength Scaling

However, the maximum power density of a Gaussian beam is about twice the maximum power density of a uniform beam, as shown in the graph to the right. Therefore, a more accurate determination of the maximum linear power density of the system is 1 W/cm.

An AC127-030-C achromatic doublet lens has a specified CW LIDT of 350 W/cm, as tested at 1550 nm. CW damage threshold values typically scale directly with the wavelength of the laser source, so this yields an adjusted LIDT value:

CW Wavelength Scaling

The adjusted LIDT value of 350 W/cm x (1319 nm / 1550 nm) = 298 W/cm is significantly higher than the calculated maximum linear power density of the laser system, so it would be safe to use this doublet lens for this application.

Pulsed Nanosecond Laser Example: Scaling for Different Pulse Durations
Suppose that a pulsed Nd:YAG laser system is frequency tripled to produce a 10 Hz output, consisting of 2 ns output pulses at 355 nm, each with 1 J of energy, in a Gaussian beam with a 1.9 cm beam diameter (1/e2). The average energy density of each pulse is found by dividing the pulse energy by the beam area:

Pulse Energy Density

As described above, the maximum energy density of a Gaussian beam is about twice the average energy density. So, the maximum energy density of this beam is ~0.7 J/cm2.

The energy density of the beam can be compared to the LIDT values of 1 J/cm2 and 3.5 J/cm2 for a BB1-E01 broadband dielectric mirror and an NB1-K08 Nd:YAG laser line mirror, respectively. Both of these LIDT values, while measured at 355 nm, were determined with a 10 ns pulsed laser at 10 Hz. Therefore, an adjustment must be applied for the shorter pulse duration of the system under consideration. As described on the previous tab, LIDT values in the nanosecond pulse regime scale with the square root of the laser pulse duration:

Pulse Length Scaling

This adjustment factor results in LIDT values of 0.45 J/cm2 for the BB1-E01 broadband mirror and 1.6 J/cm2 for the Nd:YAG laser line mirror, which are to be compared with the 0.7 J/cm2 maximum energy density of the beam. While the broadband mirror would likely be damaged by the laser, the more specialized laser line mirror is appropriate for use with this system.

Pulsed Nanosecond Laser Example: Scaling for Different Wavelengths
Suppose that a pulsed laser system emits 10 ns pulses at 2.5 Hz, each with 100 mJ of energy at 1064 nm in a 16 mm diameter beam (1/e2) that must be attenuated with a neutral density filter. For a Gaussian output, these specifications result in a maximum energy density of 0.1 J/cm2. The damage threshold of an NDUV10A Ø25 mm, OD 1.0, reflective neutral density filter is 0.05 J/cm2 for 10 ns pulses at 355 nm, while the damage threshold of the similar NE10A absorptive filter is 10 J/cm2 for 10 ns pulses at 532 nm. As described on the previous tab, the LIDT value of an optic scales with the square root of the wavelength in the nanosecond pulse regime:

Pulse Wavelength Scaling

This scaling gives adjusted LIDT values of 0.08 J/cm2 for the reflective filter and 14 J/cm2 for the absorptive filter. In this case, the absorptive filter is the best choice in order to avoid optical damage.

Pulsed Microsecond Laser Example
Consider a laser system that produces 1 µs pulses, each containing 150 µJ of energy at a repetition rate of 50 kHz, resulting in a relatively high duty cycle of 5%. This system falls somewhere between the regimes of CW and pulsed laser induced damage, and could potentially damage an optic by mechanisms associated with either regime. As a result, both CW and pulsed LIDT values must be compared to the properties of the laser system to ensure safe operation.

If this relatively long-pulse laser emits a Gaussian 12.7 mm diameter beam (1/e2) at 980 nm, then the resulting output has a linear power density of 5.9 W/cm and an energy density of 1.2 x 10-4 J/cm2 per pulse. This can be compared to the LIDT values for a WPQ10E-980 polymer zero-order quarter-wave plate, which are 5 W/cm for CW radiation at 810 nm and 5 J/cm2 for a 10 ns pulse at 810 nm. As before, the CW LIDT of the optic scales linearly with the laser wavelength, resulting in an adjusted CW value of 6 W/cm at 980 nm. On the other hand, the pulsed LIDT scales with the square root of the laser wavelength and the square root of the pulse duration, resulting in an adjusted value of 55 J/cm2 for a 1 µs pulse at 980 nm. The pulsed LIDT of the optic is significantly greater than the energy density of the laser pulse, so individual pulses will not damage the wave plate. However, the large average linear power density of the laser system may cause thermal damage to the optic, much like a high-power CW beam.


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Posted Comments:
Poster:petr.bouchal
Posted Date:2016-01-19 12:30:04.513
Hello, I appreciate additional information on acceptance angles of your linear polarizers. Are the values of the extinction ratio valid within the whole cone given by acceptance angle? Thank, you. Sincerely, Petr.
Poster:besembeson
Posted Date:2016-01-19 01:51:51.0
Response from Bweh at Thorlabs USA: Due to the dependence of the reflectivity and transmission of the AR coating to angle of incidence (<0.5% at 0° AOI), and the dependence of the Fresnel reflections/transmission with angle of incidence, the extinction ratio will not be the same over the acceptance angle. You are correct we will look into providing more information/data regarding this on these pages.
Poster:besembeson
Posted Date:2014-10-09 12:51:19.0
Response from Bweh at Thorlabs: We can provide this to you as a custom item. I will follow up via email with a quotation.
Poster:IGKIOU
Posted Date:2014-10-02 16:27:08.47
Hi, are there larger versions of the visible polarizers available? I would be particularly interested in a 3'' round version of LPVISE200-A. Thank you in advance.
Poster:tcohen
Posted Date:2013-11-14 04:14:33.0
Response from Tim at Thorlabs: When using a polarizer for attenuation with a source of this power it would be better to use a non-absorptive polarizer for the rejection. A calcite based polarizer would be more suited for this application.
Poster:parksj
Posted Date:2013-11-04 20:35:23.713
Hello We have purchased the linear polarizers 'LPNIRE100-B' to adjust the output power of Nd-Yag pulsed laser. However, when i placed the polarizer in the beam path of the pulsed laser, the polarizser burned out and colored black. The used Nd-Yag laser spec is shown below: pulse duration ~10 nsec rep. rate: 20 Hz energy per pulse < 50mJ output wavelength 1064nm Would you let me know why it burned and recommend the proper polarizers or components to adjust the output power of the Nd-Yag laser? Best regards, Seongjun Park
Poster:tcohen
Posted Date:2013-08-05 11:11:00.0
Response from Tim at Thorlabs: This product will not act as a polarizer at 785nm. The LPNIRE100-B would be more suitable (please see the graphs for ER plots). I'd like to discuss your measurement with you but I see you did not leave any contact information. Please contact us at techsupport@thorlabs.com to continue this discussion.
Poster:tcohen
Posted Date:2013-08-05 11:10:00.0
Response from Tim at Thorlabs: This would likely be damaged by your fs laser. A Glan-Taylor/Laser/Thompson would be more suitable.
Poster:
Posted Date:2013-08-01 18:58:11.387
Hi! I noticed when using the LPVISE100-A for 785nm that the optical axis (or angles at minimum/maximum transmission) is different dependent on from which side the light enters. Is this as expected?
Poster:christian.b.schmidt
Posted Date:2013-07-10 07:42:36.723
Do you have any information about the beam displacement? (Polarizer turning from 0-45-90-180 deg?) And would the polarizer be suitable for 700-900nm for a laser 100fs, total power of ~1W, 76MHz, beam diameter ~3mm?
Poster:spotnis
Posted Date:2013-01-24 13:01:12.217
Can I obtain data for transmission and polarization extinction for 780nm?
Poster:cdaly
Posted Date:2013-01-29 17:40:00.0
Response from Chris at Thorlabs: Thank you for using our web feedback. The transmission is going to be roughly 90% and the extinction ratio will be less than 10:1. The LPVIS series of polarizers will have much better performance, as these are specified at 780 nm to have an extinction ratio of greater than 100,000:1.
Poster:sharrell
Posted Date:2012-01-13 08:10:00.0
Thank you for your feedback. We do not recommend our economy polarizers for high-power applications. Regarding the transmission values, the value indicated on the curve is for a linearly polarized input, while the value on the pdf drawing and specifications is for an unpolarized input, leading to the 50% discrepancy. We will clarify this on our website.
Poster:francisco1591
Posted Date:2012-01-03 11:50:59.0
What is the laser power tolerance of the economy linear polarizers?? Why is the avg transmission 38% according to the AUto-CAD drawings and specs, while is about 70% according to the transmission curves

Polarizer Selection Guide

Thorlabs offers a diverse range of polarizers, including wire grid, film, calcite, alpha-BBO, rutile, and beamsplitting polarizers. Collectively, our line of wire grid polarizers offers coverage from the visible range to the beginning of the Far-IR range. Our nanoparticle linear film polarizers provide extinction ratios as high as 100,000:1. Alternatively, our other film polarizers offer an affordable solution for polarizing light from the visible to the Near-IR. Next, our beamsplitting polarizers allow for use of the reflected beam, as well as the more completely polarized transmitted beam. Finally, our Alpha-BBO (UV), calcite (visible to Near-IR), and rutile (Near-IR to Mid-IR) polarizers each offer an exceptional extinction ratio of 100,000:1 within their respective wavelength ranges.

To explore the available types, wavelength ranges, extinction ratios, transmission, and available sizes for each polarizer category, click More [+] in the appropriate row below.

Wire Grid Polarizers
Film Polarizers
Beamsplitting Polarizers
alpha-BBO Polarizers
Calcite Polarizers
Quartz Polarizers
Magnesium Fluoride Polarizers
Rutile Polarizers
Polarizer Type Wavelength Range Extinction Ratio Transmissiona Available Sizes
Rutile TiO2 Polarizers 2.2 µm - 4 µm 100,000:1 9.1 mm x 9.5 mm x 9.5 mmb and
10.7 mm x 15.9 mm x 15.9 mmb
  • Click on the graph icons in this column to view a transmission curve for the corresponding polarizer. Each curve represents one substrate sample or coating run and is not guaranteed.
  • Mounted in a protective box, unthreaded ring, or cylinder that indicates the polarization axis.
  • Available unmounted or in an SM05-threaded (0.535"-40) mount that indicates the polarization axis.
  • Available unmounted or in an SM1-threaded (1.035"-40) mount that indicates the polarization axis.
  • Available unmounted or mounted in cubes for cage system compatibility.
  • Calcite's transmittance of light near 350 nm is typically around 75% (see Transmission column).
  • Available unmounted or in an unthreaded Ø1/2" housing.
  • The transmission curves for calcite are valid for linearly polarized light with a polarization axis aligned with the mark on the polarizer's housing.
  • The 1064 nm V coating corresponds to a -C26 suffix in the item number.
  • Available unmounted or mounted in a protective box or unthreaded cylinder that indicates the polarization axis.

Economy Film Polarizers, 400 - 700 nm

Item #LPVISE050-ALPVISE100-ALPVISE200-A
Operating
Wavelength Range
400 - 700 nm
AR Coating Range 350 - 700 nm
Reflectance over
Coating Range (Avg.)
<0.5% at 0° AOI
AR Coating Curve Icon
Extinction Ratioa,b >100:1 (400 - 500 nm)
>1000:1 (500 - 700 nm)
>5000:1 (530 - 690 nm)
Size Ø1/2" Ø1" Ø2"
Thickness 2.1 mm 3.3 mm 6.5 mm
Dimensional Tolerance ±0.2 mm
Damage Threshold 1 W/cm (532 nm, CW, Ø0.471 mm)c
0.4 J/cm2 (532 nm, 10 ns, 10 Hz, Ø0.750 mm)
  • The extinction ratio (ER) is the ratio of the maximum transmission of a linearly polarized signal when the polarizer’s axis is aligned with the signal to the minimum transmission when the polarizer is rotated by 90°.
  • The extinction ratio is specified at 0º AOI and will vary slightly over the acceptance angle of the optic.
  • The power density of your beam should be calculated in terms of W/cm. For an explanation of why the linear power density provides the best metric for long pulse and CW sources, please see the Damage Thresholds tab.
A-Coated Polarizers Data
Click to Enlarge

Click Here for Data
The graph above shows the measured transmission of unpolarized light as well as that of polarized light aligned with the polarization axis of the optic. The shaded region represents the specified operating wavelength range of the polarizer.

These thin film polarizers, which are optimized for use in the 400 - 700 nm range, have an AR coating for the 350 - 700 nm range deposited on the air-to-glass interface of each window. They offer an average transmission of 38% for unpolarized light over their operating wavelength range. The direction of the output polarization is marked on the edge of each polarizer.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
LPVISE050-A Support Documentation
LPVISE050-ACustomer Inspired!Ø1/2" Linear Polarizer with N-BK7 Windows, 400-700 nm
$75.00
Today
LPVISE100-A Support Documentation
LPVISE100-ACustomer Inspired!Ø1" Linear Polarizer with N-BK7 Windows, 400-700 nm
$89.00
Lead Time
LPVISE200-A Support Documentation
LPVISE200-ACustomer Inspired!Ø2" Linear Polarizer with N-BK7 Windows, 400-700 nm
$150.00
Today

Economy Film Polarizers, 600 - 1100 nm

Item #LPNIRE050-BLPNIRE100-BLPNIRE200-B
Operating
Wavelength Range
600 - 1100 nm
AR Coating Range 650 - 1050 nm
Reflectance over
Coating Range (Avg.)
<0.5% at 0° AOI
AR Coating Curve Icon
Extinction Ratioa,b >1000:1 (600 - 950 nm)
>400:1 (600 - 1100 nm)
Size Ø1/2" Ø1" Ø2"
Thickness 2.1 mm 3.3 mm 6.5 mm
Dimensional Tolerance ±0.2 mm
Damage Threshold 1 W/cm (810 nm, CW, Ø0.004 mm)c
0.3 J/cm2 (810 nm, 10 ns, 10 Hz, Ø0.08 mm)
  • The extinction ratio (ER) is the ratio of the maximum transmission of a linearly polarized signal when the polarizer’s axis is aligned with the signal to the minimum transmission when the polarizer is rotated by 90°.
  • The extinction ratio is specified at 0º AOI and will vary slightly over the acceptance angle of the optic.
  • The power density of your beam should be calculated in terms of W/cm. For an explanation of why the linear power density provides the best metric for long pulse and CW sources, please see the Damage Thresholds tab.
B-Coated Polarizers Data
Click to Enlarge

Click Here for Data
The graph above shows the measured transmission of unpolarized light as well as that of polarized light aligned with the polarization axis of the optic. The shaded region represents the specified operating wavelength range of the polarizer.

These thin film polarizers, which are optimized for use in the 600 - 1100 nm range, have an AR coating for the 650 - 1050 nm range deposited on the air-to-glass interface of each window. They offer an average transmission of 43% for unpolarized light over their operating wavelength range. The NIR polarizers sold here do not completely absorb the rejected polarization. On average, they reflect 25% of the rejected light. The direction of the output polarization is marked on the edge of each polarizer. 

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
LPNIRE050-B Support Documentation
LPNIRE050-BØ1/2" Linear Polarizer with N-BK7 Windows, 600-1100 nm
$81.00
Today
LPNIRE100-B Support Documentation
LPNIRE100-BØ1" Linear Polarizer with N-BK7 Windows, 600-1100 nm
$107.00
Today
LPNIRE200-B Support Documentation
LPNIRE200-BØ2" Linear Polarizer with N-BK7 Windows, 600-1100 nm
$132.00
Today

Economy Film Polarizers, 1050 - 1700 nm

Item #LPIREA050-CLPIREA100-CLPIREA200-C
Operating
Wavelength Range
1050 - 1700 nm
AR Coating Range 1050 - 1700 nm
Reflectance over
Coating Range (Avg.)
<0.5% at 0° AOI
AR Coating Curve Icon
Extinction Ratioa,b >1000:1 (1050 - 1400 nm)
>2000:1 (1400 - 1700 nm)
Size Ø1/2" Ø1" Ø2"
Thickness 2.5 mm 3.7 mm 6.9 mm
Dimensional Tolerance ±0.3 mm
Damage Threshold 1 W/cm (1542 nm, CW, Ø0.161 mm)c
2 J/cm2 (1540 nm, 10 ns, 10 Hz, Ø0.242 mm)
  • The extinction ratio (ER) is the ratio of the maximum transmission of a linearly polarized signal when the polarizer’s axis is aligned with the signal to the minimum transmission when the polarizer is rotated by 90°.
  • The extinction ratio is specified at 0º AOI and will vary slightly over the acceptance angle of the optic.
  • The power density of your beam should be calculated in terms of W/cm. For an explanation of why the linear power density provides the best metric for long pulse and CW sources, please see the Damage Thresholds tab.
C-Coated Polarizers Data
Click to Enlarge

Click Here for Data
The graph above shows the measured transmission of unpolarized light as well as that of polarized light aligned with the polarization axis of the optic. The shaded region represents the specified operating wavelength range of the polarizer.

These thin film polarizers, which are optimized for use in the 1050 - 1700 nm range, have an AR coating deposited on the air-to-glass interface of each window. They offer an average transmission of 45% for unpolarized light over their operating wavelength range. The direction of the output polarization is marked on the edge of each polarizer.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
LPIREA050-C Support Documentation
LPIREA050-CØ1/2" Linear Polarizer with N-BK7 Windows, 1050-1700 nm
$100.00
Lead Time
LPIREA100-C Support Documentation
LPIREA100-CØ1" Linear Polarizer with N-BK7 Windows, 1050-1700 nm
$168.00
Lead Time
LPIREA200-C Support Documentation
LPIREA200-CØ2" Linear Polarizer with N-BK7 Windows, 1050-1700 nm
$350.00
Today
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