Create an Account  |   Log In

View All »Matching Part Numbers


Your Shopping Cart is Empty
         

Concave Mirrors: Protected Gold (800 nm - 20 µm)


  • Protected Gold Coating
  • Focal Lengths from 9.5 - 1000 mm
  • Ø1/2", Ø1", Ø2", and Ø75 mm
  • No Chromatic Aberration Introduced

CM750-056-M01

Ø75 mm

CM508-038-M01

Ø2"

CM254-019-M01

Ø1"

CM127-010-M01

Ø1/2"

Focus Polychromatic
Beams without
Chromatic Aberration

Related Items


Please Wait
Common Specifications
Available Diameters 1/2", 1", 2", and 75 mm
Metallic Coating Range 800 nm - 20 µm; Ravg > 96%
Clear Aperture >90% of Diameter
Surface Quality 40-20 Scratch-Dig
Diameter Tolerance +0.0/-0.2 mm
Substrate N-BK7a
Backside Surface Fine Ground and Engraved with Part Number
(Not Polished)
  • Click Link for Detailed Specifications on the Substrate
Metallic-Coated Concave Mirrors
UV-Enhanced Aluminum
250 - 450 nm
Protected Aluminum
450 nm - 20 µm
Protected Silver
450 nm - 20 µm
Protected Gold
800 nm - 20 µm

See the Concave Mirror Guide tab, above, for our complete selection of concave mirrors.

Features

  • Protected Gold: 800 nm - 20 µm
  • Four Diameter Options: 1/2", 1", 2", or 75 mm
  • Focal Lengths Range from 9.5 mm - 1000 mm

Thorlabs' Protected Gold-Coated Concave Mirrors are designed for light collection, imaging, and focusing applications. These reflective optics focus light without introducing chromatic aberration, making them especially suitable for broadband sources.

These mirrors offer >96% average reflection in the infrared spectral range from 800 nm - 20 µm. They consist of a gold-coated N-BK7 substrate that features a protective SiO2 overcoat. With ≤λ/4 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.

Please contact Tech Support for custom versions of these optics. Thorlabs also offers dielectric concave mirrors that provide higher reflectivity than metal mirrors at the expense of operating over a more narrow wavelength range.

Optical Coatings and Substrates
Optic Cleaning Tutorial

The shaded regions in the graphs denote the ranges over which we guarantee the specified reflectance. Please note that the reflectance outside of these bands is typical and can vary from lot to lot, especially in out-of-band regions where the reflectance is fluctuating or sloped.

Protected Gold at Near-Normal Incident Angle
Click to Enlarge

Excel Spreadsheet with Raw Data for Protected Gold
Protected Gold at 45 Degree Incident Angle
Click to Enlarge

Excel Spreadsheet with Raw Data for Protected Gold

Posted Comments:
No Comments Posted
Concave Mirrors Coating Options
Coating Wavelength Range
UV Enhanced Aluminum 250 - 450 nm
Aluminum 450 nm - 20 µm
Silver 450 nm - 20 µm
Gold 800 nm - 20 µm
E01 Dielectric 350 - 400 nm
E02 Dielectric 400 - 750 nm
E03 Dielectric 750 - 1100 nm
E04 Dielectric 1280 - 1600 nm

Concave Mirror Selection Guide

Thorlabs offers concave mirrors with both metallic and dielectric stack reflective coatings. Metallic-coated mirrors offer relatively high reflectivity (90-95%) over a wide wavelength range, while dielectric-coated mirrors provide even higher reflectivity (>99%) but over a smaller wavelength range. See the table to the right for an overview of the various coatings we offer for our concave mirrors. All coating options are available on optics with diameters ranging from Ø1/2" to Ø75 mm. Metallic mirrors are available with focal lengths from 9.5 - 1000 mm, while dielectric mirrors are available with focal lengths from 12 - 500 mm.

Below are reflectivity plots for our complete line of concave mirrors. To view our selection of mirrors available with a particular coating, either click on the graphed line of interest or the corresponding coating name in the legend. Graphs are shown for an angle of incidence (AOI) of 8 degrees, which is the recommended angle at which to use a concave mirror.

Metallic Concave Mirror 8 AOI Reflectivity

Concave Dielectric Mirrors 8 Degrees AOI

Click on a particular graphed line or the corresponding name in the legend to view concave mirrors with that coating option.

E01 Dielectric Coating E02 Dielectric Coating E03 Dielectric Coating E04 Dielectric Coating E01 Dielectric Coating E02 Dielectric Coating E03 Dielectric Coating E04 Dielectric Coating

UV Aluminum (F01) Aluminum (G01) Silver (P01) Gold (M01) UV Aluminum (F01) Aluminum (G01) Silver (P01) Gold (M01)

Ø1/2" Gold-Coated Concave Mirrors: 800 nm - 20 µm

Item # Focal Length Center Thickness Edge Thickness Radius of Curvature Surface Irregularity Thickness Tolerance Reference Drawing
CM127-010-M01 9.5 mm 3.0 mm 4.0 mm 19.0 mm (0.75") λ/4 @ 633 nm ±0.2 mm Concave Mirror Drawing
CM127-012-M01 12.0 mm 3.8 mm 24.0 mm (0.94")
CM127-025-M01 25.0 mm 3.4 mm 50.0 mm (1.97")
CM127-050-M01 50.0 mm 3.2 mm 100.0 mm (3.94")
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
CM127-010-M01 Support Documentation
CM127-010-M01Ø1/2" Gold-Coated Concave Mirror, f = 9.5 mm
$37.23
Today
CM127-012-M01 Support Documentation
CM127-012-M01Customer Inspired! Ø1/2" Gold-Coated Concave Mirror, f = 12.0 mm
$37.23
Today
CM127-025-M01 Support Documentation
CM127-025-M01Customer Inspired! Ø1/2" Gold-Coated Concave Mirror, f = 25.0 mm
$37.23
Today
CM127-050-M01 Support Documentation
CM127-050-M01Customer Inspired! Ø1/2" Gold-Coated Concave Mirror, f = 50.0 mm
$37.23
Today

Ø1" Gold-Coated Concave Mirrors: 800 nm - 20 µm

Item # Focal Length Center Thickness Edge Thickness Radius of Curvature Surface Irregularity Thickness Tolerance Reference Drawing
CM254-019-M01 19.0 mm 6.0 mm 8.1 mm 38.0 mm (1.50") λ/4 @ 633 nm ±0.2 mm Concave Mirror Drawing
CM254-025-M01 25.0 mm 7.6 mm 50.0 mm (1.97")
CM254-050-M01 50.0 mm 6.8 mm 100.0 mm (3.94")
CM254-075-M01 75.0 mm 6.5 mm 150.0 mm (5.91")
CM254-100-M01 100.0 mm 6.4 mm 200.0 mm (7.87")
CM254-150-M01 150.0 mm 6.3 mm 300.0 mm (11.81") ≤λ/4 @ 633 nm ±0.1 mm
CM254-200-M01 200.0 mm 6.2 mm 400.0 mm (15.75")
CM254-250-M01 250.0 mm 6.2 mm 500.0 mm (19.69")
CM254-500-M01 500.0 mm 6.1 mm 1000.0 mm (39.37")
CM254-750-M01 750.0 mm 6.1 mm 1500.0 mm (59.06")
CM254-1000-M01 1000.0 mm 6.0 mm 2000.0 mm (78.74")
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
CM254-019-M01 Support Documentation
CM254-019-M01Ø1" Gold-Coated Concave Mirror, f = 19.0 mm
$56.87
Today
CM254-025-M01 Support Documentation
CM254-025-M01Customer Inspired! Ø1" Gold-Coated Concave Mirror, f = 25.0 mm
$56.87
Today
CM254-050-M01 Support Documentation
CM254-050-M01Customer Inspired! Ø1" Gold-Coated Concave Mirror, f = 50.0 mm
$56.87
Today
CM254-075-M01 Support Documentation
CM254-075-M01Customer Inspired! Ø1" Gold-Coated Concave Mirror, f = 75.0 mm
$56.87
Today
CM254-100-M01 Support Documentation
CM254-100-M01Customer Inspired! Ø1" Gold-Coated Concave Mirror, f = 100.0 mm
$56.87
Today
CM254-150-M01 Support Documentation
CM254-150-M01NEW!Customer Inspired! Ø1" Gold-Coated Concave Mirror, f = 150.0 mm
$56.87
Today
CM254-200-M01 Support Documentation
CM254-200-M01NEW!Customer Inspired! Ø1" Gold-Coated Concave Mirror, f = 200.0 mm
$56.87
Today
CM254-250-M01 Support Documentation
CM254-250-M01NEW!Customer Inspired! Ø1" Gold-Coated Concave Mirror, f = 250.0 mm
$56.87
Today
CM254-500-M01 Support Documentation
CM254-500-M01NEW!Customer Inspired! Ø1" Gold-Coated Concave Mirror, f = 500.0 mm
$56.87
Today
CM254-750-M01 Support Documentation
CM254-750-M01NEW!Customer Inspired! Ø1" Gold-Coated Concave Mirror, f = 750.0 mm
$56.87
Today
CM254-1000-M01 Support Documentation
CM254-1000-M01NEW!Customer Inspired! Ø1" Gold-Coated Concave Mirror, f = 1000.0 mm
$56.87
Today

Ø2" Gold-Coated Concave Mirrors: 800 nm - 20 µm

Item # Focal Length Center Thickness Edge Thickness Radius of Curvature Surface Irregularity Thickness Tolerance Reference Drawing
CM508-038-M01 38.1 mm 9.0 mm 13.3 mm 76.2 mm (3.00") λ/4 @ 633 nm ±0.2 mm Concave Mirror Drawing
CM508-050-M01 50.0 mm 12.2 mm 100.0 mm (3.94")
CM508-100-M01 100.0 mm 10.6 mm 200.0 mm (7.87")
CM508-150-M01 150.0 mm 10.1 mm 300.0 mm (11.81")
CM508-200-M01 200.0 mm 9.8 mm 400.0 mm (15.75")
CM508-500-M01 500.0 mm 9.3 mm 1000.0 mm (39.37") ≤λ/4 @ 633 nm ±0.1 mm
CM508-750-M01 750.0 mm 9.2 mm 1500.0 mm (59.06")
CM508-1000-M01 1000.0 mm 9.2 mm 2000.0 mm (78.74")
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
CM508-038-M01 Support Documentation
CM508-038-M01Ø2" Gold-Coated Concave Mirror, f = 38.1 mm
$85.43
Today
CM508-050-M01 Support Documentation
CM508-050-M01Customer Inspired! Ø2" Gold-Coated Concave Mirror, f = 50.0 mm
$85.43
Today
CM508-100-M01 Support Documentation
CM508-100-M01Customer Inspired! Ø2" Gold-Coated Concave Mirror, f = 100.0 mm
$85.43
5-8 Days
CM508-150-M01 Support Documentation
CM508-150-M01Customer Inspired! Ø2" Gold-Coated Concave Mirror, f = 150.0 mm
$85.43
Today
CM508-200-M01 Support Documentation
CM508-200-M01Customer Inspired! Ø2" Gold-Coated Concave Mirror, f = 200.0 mm
$85.43
Today
CM508-500-M01 Support Documentation
CM508-500-M01NEW!Customer Inspired! Ø2" Gold-Coated Concave Mirror, f = 500.0 mm
$85.43
Today
CM508-750-M01 Support Documentation
CM508-750-M01NEW!Customer Inspired! Ø2" Gold-Coated Concave Mirror, f = 750.0 mm
$85.43
Today
CM508-1000-M01 Support Documentation
CM508-1000-M01NEW!Customer Inspired! Ø2" Gold-Coated Concave Mirror, f = 1000.0 mm
$85.43
Today

Ø75 mm Gold-Coated Concave Mirrors: 800 nm - 20 µm

Item # Focal Length Center Thickness Edge Thickness Radius of Curvature Surface Irregularity Thickness Tolerance Reference Drawing
CM750-056-M01 56.25 mm 12.0 mm 18.4 mm 112.5 mm (4.43") λ/4 @ 633 nm ±0.2 mm Concave Mirror Drawing
CM750-075-M01 75.0 mm 16.7 mm 150.0 mm (5.91")
CM750-150-M01 150.0 mm 14.3 mm 300.0 mm (11.81")
CM750-200-M01 200.0 mm 13.7 mm 400.0 mm (15.75")
CM750-500-M01 500.0 mm 12.7 mm 1000.0 mm (39.37")
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
CM750-056-M01 Support Documentation
CM750-056-M01Ø75 mm Gold-Coated Concave Mirror, f = 56.25 mm
$163.20
Today
CM750-075-M01 Support Documentation
CM750-075-M01Customer Inspired! Ø75 mm Gold-Coated Concave Mirror, f = 75.0 mm
$163.20
Today
CM750-150-M01 Support Documentation
CM750-150-M01Customer Inspired! Ø75 mm Gold-Coated Concave Mirror, f = 150.0 mm
$163.20
Today
CM750-200-M01 Support Documentation
CM750-200-M01Customer Inspired! Ø75 mm Gold-Coated Concave Mirror, f = 200.0 mm
$163.20
Today
CM750-500-M01 Support Documentation
CM750-500-M01Customer Inspired! Ø75 mm Gold-Coated Concave Mirror, f = 500.0 mm
$163.20
Today
Log In  |   My Account  |   Contact Us  |   Careers  |   Privacy Policy  |   Home  |   FAQ  |   Site Index
Regional Websites: West Coast US | Europe | Asia | China | Japan
Copyright 1999-2018 Thorlabs, Inc.
Sales: 1-973-300-3000
Technical Support: 1-973-300-3000


High Quality Thorlabs Logo 1000px:Save this Image