Products Home / Optical Elements / Optical Mirrors / Concave Mirrors / Concave Mirrors: NIR Dielectric Coating (750 - 1100 nm)Concave Mirrors: NIR Dielectric Coating (750 - 1100 nm)
- Focal Lengths from 12 - 1000 mm
- Ø1/2", Ø1", Ø2", or Ø75 mm
- Dielectric Coating for 750 - 1100 nm
- No Chromatic Aberration
CM750-500-E03
Ø75 mm
CM508-150-E03
Ø2"
CM254-100-E03
Ø1"
CM127-050-E03
Ø1/2"
Focus Polychromatic
Beams without
Chromatic Aberration
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| Common Specifications | ||
|---|---|---|
| Available Diameters | 1/2", 1", 2", and 75 mm | |
| Dielectric Coating Range | 750 - 1100 nm; Ravg >99% | |
| Clear Aperture | >90% of Diameter | |
| Surface Quality | 20-10 Scratch-Dig | |
| Diameter Tolerance | +0.0 / -0.2 mm | |
| Substrate | N-BK7a | |
| Backside Surface | Fine Ground and Engraved with Part Number (Not Polished) |
|
| Dielectric Concave Mirrors Selection Guide | |||
|---|---|---|---|
| UV | 350 - 400 nm | ||
| Visible | 400 - 750 nm | 400 - 750 nm, Back Side Polished | |
| NIR | 750 - 1100 nm | 750 - 1100 nm, Back Side Polished | |
| Telecom | 1280 - 1600 nm | ||
See the Concave Mirror Guide tab, above, for our complete selection of concave mirrors.
Features
- Dielectric Coating Range: 750 - 1100 nm (-E03)
- Greater than 99% Average Reflectivity in Dielectric Coating Range
- Four Diameter Options: 1/2", 1", 2", or 75 mm
- Focal Lengths Range from 12 mm - 1000 mm
Thorlabs' Broadband Dielectric Concave Mirrors are designed for a wide variety of light collection, imaging, and focusing applications. These reflective optics focus light without chromatic aberration, making them especially suitable for broadband sources. With low surface irregularity at 633 nm, these mirrors provide excellent image quality.
All of the mirrors on this page can be mounted by our Precision Kinematic Mirror Mounts.
Thorlabs also offers metallic concave mirrors that operate over a broader wavelength range at the expense of lower reflectivity. Please contact Tech Support for custom versions of these optics.
These plots show the reflectivity of our -E03 dielectric coating 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 concave mirror.
Excel Spreadsheet with Raw Data for -E03 Coating, 6° and 45° AOI
| Posted Comments: | |
g xz
(posted 2024-01-17 16:11:57.443) Dear Thorlabs, I would like to ask about the dispersion size of the mirror CM508-200-E03.Thank you. jdelia
(posted 2024-01-17 02:14:15.0) Thank you for contacting Thorlabs. I have reached out to you directly to share our dispersion data for this optic. Ada Uminska
(posted 2021-12-16 10:57:38.783) Dear Thorlabs Team,
I would like to ask about the concave mirror with dielectric coating for 1064 nm wavelength, with RoC = - 1m, and back side polished. Would you be able to provide such substrate? If is it would be a possibility what would be the lead time and the cost.
Thank you,
Ada YLohia
(posted 2021-12-23 01:07:38.0) Hello Ada, custom items can be requested by clicking on the "Request Quote" button above or by emailing techsales@thorlabs.com. We will discuss the possibility of offering this. Kwangdong Roh
(posted 2020-03-20 12:34:06.703) Dear Thorlabs,
I am interested in purchasing one of the dielectric concave mirrors. But I am curious whether the backside of the mirror is polished or not. I want to use it as a laser output coupler, so the backside should be polished. YLohia
(posted 2020-03-20 12:40:46.0) Hello, thank you for contacting Thorlabs. These are not backside polished. Custom backside polished mirrors and other optics can be requested by emailing techsupport@thorlabs.com. Jun-Ren Chen
(posted 2020-03-16 02:52:42.5) hi:
For CM254-050-E03, is it possible to order the mirror that the backside is polished?
We would like to use two of this mirror to make a fabry-Perot interferometer. YLohia
(posted 2020-03-16 11:26:57.0) Hello, thank you for contacting Thorlabs. Custom backside polished mirrors and other optics can be requested by emailing techsupport@thorlabs.com. I have reached out to you directly regarding this. Reza Amani
(posted 2019-11-08 04:44:20.453) I needed two of these mirrors for a mini-project. The label on the box was correct but there were CM508-1000-E03 mirrors inside! I wonder why you are using a focal length for curved mirrors while using a radius of curvature is more common. I guess your staff might have thought that 1000 indicates R=1000 mm so it was the correct optic to go in the box. I hope you consider to use the radius of curvature for curved mirrors to avoid such mistakes or at least ask your staff to put correct optics in the boxes. Thank you. YLohia
(posted 2019-11-07 03:18:46.0) Hello, thank you for your feedback and our sincere apologies for the packaging error. I have reached out to you directly to gather order information to set up inspected replacements for these mirrors. Edward Flagg
(posted 2019-08-06 13:07:41.053) I am interested in obtaining E03 coated concave mirrors that are backside polished. Is this possible?
I would also like to know the approximate reflectivity of E03 coating at 632 nm (yes, I know that's not the design wavelength of the coating).
Thank you YLohia
(posted 2019-08-06 02:10:41.0) Hello, thank you for contacting Thorlabs. The EO3 mirror coating is expected to have a reflectivity of ~92.8% at 632nm at 8deg AOI. The -s and -p reflectivities are ~99% and 97% respectively at 45deg AOI. Note that this is not a formal spec since it is outside of the designed coating range. Please email techsupport@thorlabs.com for custom item quotes. We will reach out to you directly to discuss the possibility of offering this. |
Click on a particular graphed line or the corresponding name in the legend to view concave mirrors with that coating option.
Metallic-Coated Concave Mirrors are available in UV Enhanced Aluminum, Aluminum, Silver, and Gold.
Concave Dielectric Coated Mirrors
Click to Enlarge
Raw Data
Reflectance of -E02 Dielectric-Coated Concave Mirrors at 8° AOI.
These mirrors are also available with a Back Side Polish.
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Click to Enlarge
Raw Data
Reflectance of -E03 Dielectric-Coated Concave Mirrors at 6° AOI.
These mirrors are also available with a Back Side Polish.
Concave Crystalline Coating Mirrors
| Item # | Focal Length | Center Thickness | Edge Thickness | Radius of Curvature | Surface Irregularity | Thickness Tolerance | Reference Drawing |
|---|---|---|---|---|---|---|---|
| CM127-012-E03 | 12 mm | 3.0 mm | 3.8 mm | 24.0 mm (0.94") | λ/4 @ 633 nm | ±0.2 mm |  |
| CM127-025-E03 | 25 mm | 3.4 mm | 50.0 mm (1.97") | ||||
| CM127-050-E03 | 50 mm | 3.2 mm | 100.0 mm (3.94") |
| Item # | Focal Length | Center Thickness | Edge Thickness | Radius of Curvature | Surface Irregularity | Thickness Tolerance | Reference Drawing |
|---|---|---|---|---|---|---|---|
| CM254-025-E03 | 25 mm | 6.0 mm | 7.6 mm | 50.0 mm (1.97") | λ/4 @ 633 nm | ±0.2 mm | |
| CM254-050-E03 | 50 mm | 6.8 mm | 100.0 mm (3.94") | ||||
| CM254-075-E03 | 75 mm | 6.5 mm | 150.0 mm (5.91") | ||||
| CM254-100-E03 | 100 mm | 6.4 mm | 200.0 mm (7.87") | ||||
| CM254-150-E03 | 150 mm | 6.3 mm | 300.0 mm (11.81") | ≤λ/4 @ 633 nm | ±0.1 mm | ||
| CM254-200-E03 | 200 mm | 6.2 mm | 400.0 mm (15.75") | ||||
| CM254-250-E03 | 250 mm | 6.2 mm | 500.0 mm (19.69") | ||||
| CM254-500-E03 | 500 mm | 6.1 mm | 1000.0 mm (39.37") | ||||
| CM254-750-E03 | 750 mm | 6.1 mm | 1500.0 mm (59.06") | ||||
| CM254-1000-E03 | 1000 mm | 6.0 mm | 2000.0 mm (78.74") |
| Item # | Focal Length | Center Thickness | Edge Thickness | Radius of Curvature | Surface Irregularity | Thickness Tolerance | Reference Drawing |
|---|---|---|---|---|---|---|---|
| CM508-050-E03 | 50 mm | 9.0 mm | 12.2 mm | 100.0 mm (3.94") | λ/4 @ 633 nm | ±0.2 mm | |
| CM508-100-E03 | 100 mm | 10.6 mm | 200.0 mm (7.87") | ||||
| CM508-150-E03 | 150 mm | 10.1 mm | 300.0 mm (11.81") | ||||
| CM508-200-E03 | 200 mm | 9.8 mm | 400.0 mm (15.75") | ||||
| CM508-500-E03 | 500 mm | 9.3 mm | 1000.0 mm (39.37") | ≤λ/4 @ 633 nm | ±0.1 mm | ||
| CM508-750-E03 | 750 mm | 9.2 mm | 1500.0 mm (59.06") | ||||
| CM508-1000-E03 | 1000 mm | 9.2 mm | 2000.0 mm (78.74") |
| Item # | Focal Length | Center Thickness | Edge Thickness | Radius of Curvature | Surface Irregularity | Thickness Tolerance | Reference Drawing |
|---|---|---|---|---|---|---|---|
| CM750-075-E03 | 75 mm | 12.0 mm | 16.7 mm | 150.0 mm (5.91") | λ/4 @ 633 nm | ±0.2 mm | |
| CM750-150-E03 | 150 mm | 14.3 mm | 300.0 mm (11.81") | ||||
| CM750-200-E03 | 200 mm | 13.7 mm | 400.0 mm (15.75") | ||||
| CM750-500-E03 | 500 mm | 12.7 mm | 1000.0 mm (39.37") |
Additional Concave Mirrors
NIR Dielectric Concave Mirrors