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Economy Hot and Cold Mirrors: Soda-Lime Substrate


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Economy Hot and Cold Mirrors: Soda-Lime Substrate

Optical Coatings and Substrates
Optic Cleaning Tutorial

Features

  • Hot Mirrors for Reflecting IR and Transmitting Visible Light
  • Cold Mirrors for Transmitting IR and Reflecting Visible Light
  • Substrate: Soda-Lime Glass
45 Degree AOI Drawing
Zero Degree AOI Drawing

Thorlabs Soda-Lime Hot Mirrors are perfect for keeping unwanted heat from reaching sensitive areas of your setup. In applications where heat build up is a concern, a 0° incidence hot mirror provides a means of protection by blocking the IR.

Thorlabs Soda-Lime Cold Mirrors work to transmit IR energy and reflect the visible light from your setup at 90°. These mirrors are perfect for applications where the IR energy can be dumped and the visible is reflected at 90°. These mirrors are excellent for projection applications and for use as low and high pass filters.

The KM100T and KM200T are ideal mounting solutions for this line of hot and cold mirrors and are compatible with both imperial and metric posts. For both types of mirrors, the coated surface should face the source.

If your application requires a substrate with a lower coefficient of thermal expansion, better overall performance, or a longer lifetime, please consider our UV Fused Silica Hot and Cold Mirrors.

Item #FM01, FM201FM02FM04, FM204FM03, FM203
MirrorWide Band Hot MirrorRed ReflectorUV Cold MirrorCold Mirror
Angle of Incidence45°45°45°
50% Cut-Off720 ± 25 nm580 ± 15 nm--
Transmission>85% Avg
from 450 to 645 nm
>85% Avg
from 400 to 550 nm
>85% Avg
from 600 to 1200 nm
>85% Avg
from 750 to 1200 nm
Reflection>90% Avg
from 750 to 1200 nm
>90% Avg
from 610 to 725 nm
>90% Avg
from 325 to 475 nm
>90% Avg
from 420 to 630 nm
Surface Quality20-10 Scratch-Dig

Hot and Cold Mirror Diagram

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Posted Comments:
Poster: b.steel1
Posted Date: 2013-02-11 08:39:47.517
Could you please send me data for longer wavelengths (eg as for 1/7/10 post). We are looking at splitting light going up to 2.5 microns. Thanks!
Poster: sharrell
Posted Date: 2013-02-15 08:07:00.0
A response from Sean at Thorlabs: Thank you for your feedback. Our optics group is currently scanning these filters and I will post the new plots to the website as soon as they are available.
Poster: tcohen
Posted Date: 2012-06-21 15:44:00.0
Update from Tim at Thorlabs: The specification was incorrectly placed and has been removed. It is likely that your requirements of ¼ lambda will not be met by these pieces and I will contact you to discuss alternative solutions. Thank you for helping us improve the presentation of these products!
Poster: tcohen
Posted Date: 2012-06-21 10:53:00.0
Response from Tim at Thorlabs: Thank you for pointing out this discrepancy! We have removed these values as we reconfirm them and we will update the presentation with this data soon.
Poster: forrest.weesner
Posted Date: 2012-06-15 16:54:42.0
Just checking on interpretation of the specs - The header indicates flatness of 1/10 lamda; the autocad PDF lists flatness as both "n/a" on the print, and also .002 mm in tolerance table. I need 1/4 lamda or better and wish to clarify what I should expect from this product line. The 1 mm thickness is nice.
Poster: tcohen
Posted Date: 2012-05-29 12:17:00.0
Response from Tim at Thorlabs: Thank you for contacting us! Changing the angle of incidence will cause a migration of the transmission spectrum, but also may cause some deformations in the profile. We would like to send you a representative curve but do not have your email. To continue this conversation, please contact us at techsupport@thorlabs.com so that we may provide this data.
Poster:
Posted Date: 2012-05-26 13:50:50.0
How is performance affected at a 0 degree aoi on the fm204?
Poster: bdada
Posted Date: 2012-01-26 18:26:00.0
Response from Buki at Thorlabs: Thank you for your feedback. These mirrors are not meant for imaging applications because there could be some internal wedges or irregularities present in the dielectric stacks, which could cause distortion in your image. We have contacted you to learn more about your application and assist you further. You can also consider our growing selection of imaging filters to see if one of the filters would be suitable for your application: http://www.thorlabschina.cn/Navigation.cfm?Guide_ID=2117
Poster: juergens
Posted Date: 2012-01-23 08:43:39.0
Due to the small thickness of 1mm astigmatism should be lower than in your dichroic mirrors. Is it possible to use this cold mirror for high resolution imaging applications (color separation)? Do you know something about the surface flatness, imaging failures?
Poster:
Posted Date: 2011-11-30 09:41:45.0
A response from Tyler at Thorlabs: I am not sure which mirror you have, but the FM02 red reflector will perform as you described (red light reflected at 90 degrees and blue light transmitted). The mirror works best when the coated surface faces the light source because that makes it a front surface reflector for the red light. We will contact you to help figure out what needs to be changed in the setup.
Poster: sshosseini
Posted Date: 2011-11-30 00:44:54.0
Does the mirror have a front surface that needs to face the incoming beam? I thought it should because of the coating but I wasn't very successful of finding it! I used a white light and hoping to get blue colors transmit and the red one reflect but that didn't work as I thought.
Poster:
Posted Date: 2011-11-23 17:17:41.0
Response from Tyler at Thorlabs to gediminas.juska: Thank you for posting the question. I know that Pellicle beamsplitters do transmit a higher percentage of p polarized light than s polarized light. I will discuss the measurement of this with our optics group and contact you via email.
Poster: bdada
Posted Date: 2011-11-22 09:08:00.0
Response from Buki at Thorlabs: Thank you for your feedback. We have sent you a data file showing the performance of the FM201 wide band hot mirror. At 45 degrees AOI, the transmission curve shifts about 10 - 15nm to the the left. Please contact TechSupport@thorlabs.com if you have any questions.
Poster: gediminas.juska
Posted Date: 2011-11-21 13:26:31.0
I wonder how (if) a cold mirror (FM03) changes polarization of transmitted light (eg., Does it introduce a phase shift? Does it transmit one linear polarization component more than the other?). I would like to compare these properties with a pellicle beamsplitter (8:92 uncoated) ones, so if you could comment or provide data about the both of them, I would appreciate that. The wavelength of interest is 800-900nm. Thanks.
Poster: sshosseini
Posted Date: 2011-11-15 22:18:27.0
Hi Laurie, Thanks for your helpful response. I noticed I have purchased FM201 but I will be using it in a 45 degree angle. I need at least a 2" hot mirror so that is why I got it but would you help me to know how much the mirror response approximately changes and in what direction (blue or red)? Thank you, Sona
Poster: lmorgus
Posted Date: 2011-10-24 20:07:00.0
Response from Laurie at Thorlabs to sshosseini: Thank you for your inquiry. If your setup doesn't require kinematic adjustment, our 2" diameter hot mirror can be held in an LMR2 fixed mount using the included SM2RR retaining ring. Alternatively, if kinematic adjustment is necessary, I would recommend our KM200T mount.
Poster: sshosseini
Posted Date: 2011-10-21 18:16:23.0
I just got my hot mirror and it is very thin. I'm not sure if I can use it with the 2" lens mount I had in mind! How should I mount these thin hot mirror?
Poster: jaumefolch
Posted Date: 2011-06-21 20:00:17.0
I am interested in hot reflecting mirrors specially in the range of 600 nm cutoff other than the model FM02 you display. Best regards, Dr. Jaume Folch CIDETE, S.A. http://www.arrakis.es/~cidete/ Customer Email: jaumefolch@gmail.com This customer would like to be contacted.
Poster: bdada
Posted Date: 2011-06-21 18:22:00.0
Response from Buki at Thorlabs: Thank you for using our Feedback Tool, Dr. Folch. We will contact you shortly to discuss your application and determine if we can provide a custom filter that meets your requirements. Please contact TechSupport@thorlabs.com if you have any questions.
Poster: jjurado
Posted Date: 2011-05-15 15:24:00.0
Response from Javier at Thorlabs to mhensen: Thank you for submitting your request. We will send you a transmission scan of this UV cold mirror shortly. In the meantime, please be advised that the coating is highly absorptive below 325 nm.
Poster: jjurado
Posted Date: 2011-05-15 15:17:00.0
Response from Javier at Thorlabs to robin.head: Thank you very much for contacting us. We will evaluate the polarization performance of our hot and cold mirrors and let you know the results. In the meantime, I will contact you directly for more details about your application.
Poster: mhensen
Posted Date: 2011-05-09 04:36:43.0
I am interested in the transmission data of the FM04 in the region down to 300 nm. We are dealing with frequency doubled 6 fs pulses at 800 nm and we want to filter the SHG light ranging from 300-500 nm.
Poster: jjurado
Posted Date: 2011-04-19 16:44:00.0
Response from Javier at Thorlabs to Lynne: Thank you very ,much for contacting us. As a general rule of thumb, when an optical coating is changed from an angle of incidence of 0 to 45°, the coating band shifts towards a lower wavelength by 10%. The converse is also true. The overall performance of the mirror is not compromised. I will send you a typical transmission graph for the FM03 at 0 and 45 deg. incidence.
Poster: leigler
Posted Date: 2011-04-06 15:36:00.0
I have an application where I woild like to use a cold mirror at 45 deg but must occasionally flip it to 0 deg. Can you give a curve showing what the performance will degrade to? Thanks, Lynne
Poster:
Posted Date: 2011-01-27 00:34:27.0
A response from Buki at Thorlabs. You can use the 0 AOI hot mirror at 45 AOI as well. The change, much like an intereference filter, will be a shift of the transmission spectrum towards the blue. Although the shift depends on the effective index of refraction of the filters, I would estimate the shift to be <100nm, thus allowing you to separate your 1064nm source (assuming you are working with the second harmonic, 532nm light).
Poster: schuldt
Posted Date: 2011-01-26 14:46:08.0
Is it possible to use the Hot mirror in a 45° manner? Wed like to use them to couple out IR light (1064nm) from the illumination path. Best
Poster: Greg
Posted Date: 2010-09-30 13:50:03.0
A response from Greg at Thorlabs to mchen: The performance of Cold Mirrors drops off significantly as the AOI changes and goes to 0deg. As you are looking for 95 percent reflection over 450 to 500 nm and 90 percent transmission from 750 to 1300 nm, these mirrors will not be suitable.
Poster: mchen
Posted Date: 2010-09-29 15:18:36.0
What is the damage threshold of the cold mirror FM03? Can you send me the transmission curve for incident angle of 0 deg?
Poster: Thorlabs
Posted Date: 2010-07-01 17:44:46.0
Response from Javier at Thorlabs to revans: I have contacted our optics department for generating a transmission scan up to 7 um. In the meantime, I will send you a scan which covers up to 2 um. Regarding the radiant flux, we do not have damage threshold information for this mirror (in radiometric nor photometric terms. We are currently testing many of our optics components, but this hot mirror has not been tested, yet. I will bring this to the attention of our optics department. I will contact you directly in case you are interested in testing this mirror.
Poster: revans
Posted Date: 2010-07-01 14:23:14.0
Can you send me the transmission for longer wavelengths? up to 7µm would be ideal. Also what is the maximum radiant flux that this optic can handel; thinking about its use in concentrated solar devices. Cheers
Poster: Adam
Posted Date: 2010-05-20 17:17:49.0
A response from Adam at Thorlabs: We will work on updating the website. In the meantime, if you would like log plots we can supply them. Since no contact information was given, please send an email to techsupport@thorlabs.com with your request.
Poster:
Posted Date: 2010-05-18 19:52:45.0
It would really help to have the transmission plots on log scale. In linear scale, it is difficult to see the transmission value, other than nearly zero. For those of us who are interested, the transmission in long wavelength range is missing.
Poster: apalmentieri
Posted Date: 2010-03-16 12:43:51.0
A response from Adam at Thorlabs: The material of the glass is Soda lime glass. We have updated the website with this information.
Poster:
Posted Date: 2010-03-16 12:09:27.0
What material is the glass of these mirrors? BK7? UVFS? Thanks!
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Wide Band Hot Mirrors, AOI = 0°
Item # FM01, FM201
Angle of Incidence
50% Cut-Off 720 ± 25 nm
Transmission >85% Avg from 450 to 645 nm
Reflection >90% Avg from 750 to 1200 nm
Diameter Tolerance +0.00/-0.10 mm
Center Thickness Tolerance ±0.1 mm
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
FM01 Support Documentation FM01 Wide Band Hot Mirror, Dia = 1", AOI = 0°, 1 mm Thick $32.21
Today
FM201 Support Documentation FM201 Wide Band Hot Mirror, Dia = 2", AOI = 0°, 1 mm Thick $79.30
Today
Add To Cart
Red Reflector, AOI = 45°
Item # FM02
Angle of Incidence 45°
50% Cut-Off 580 ± 15 nm
Transmission >85% Avg from 400 to 550 nm
Reflection >90% Avg from 610 to 725 nm
Diameter Tolerance +0.00/-0.10 mm
Center Thickness Tolerance ±0.1 mm
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
FM02 Support Documentation FM02 45° Red Reflector, Ø1", AOI = 45°, 1 mm Thick $43.54
Today
Add To Cart
Cold Mirrors, AOI = 45°
Item # FM03, FM203
Angle of Incidence 45°
50% Cut-Off -
Transmission >85% Avg from 750 to 1200 nm
Reflection >90% Avg from 420 to 630 nm
Diameter Tolerance +0.00/-0.10 mm
Center Thickness Tolerance ±0.1 mm
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
FM03 Support Documentation FM03 45° Cold Mirror, Dia = 1", AOI = 45°, 1 mm Thick $31.54
Today
FM203 Support Documentation FM203 Cold Mirror, Dia = 2", AOI = 45°, 1 mm Thick $59.54
3-5 Days
Add To Cart
UV Cold Mirrors, AOI = 45°
Item # FM04, FM204
Angle of Incidence 45°
50% Cut-Off -
Transmission >85% Avg from 600 to 1200 nm
Reflection >90% Avg from 325 to 475 nm
Diameter Tolerance +0.00/-0.10 mm
Center Thickness Tolerance ±0.1 mm
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
FM04 Support Documentation FM04 UV Cold Mirror, Ø1", AOI = 45°, 1 mm Thick $39.54
Today
FM204 Support Documentation FM204 UV Cold Mirror, Ø2", AOI = 45°, 1 mm Thick $69.54
Today
Add To Cart
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