Windows & Wedges

Optical Windows are optical components often used to isolate other optical components from the environment, for beam sampling and for polarization and dispersion control.

Product	Wavelength Range	Substrate	Diameter	Availability	Price (USD)
Vacuum Viewport	195 - 2100 nm	UV Fused Silica	38.1 mm (1.5")	In stock	$ 146.17
Product Code Wavelength Range 195 - 2100 nm Coating Uncoated Diameter 38.1 mm (1.5") Dimensions Ø 38.1 mm (1.5") Substrate UV Fused Silica Shape Round Applications High-Vacuum Supplier Location New Jersey, USA See product details More from Thorlabs
Flat Window	2000 - 16000 nm (Uncoated)	Germanium	25.4 mm (1")	In stock	$ 194.47
Product Code Wavelength Range 2000 - 16000 nm (Uncoated) Coating Uncoated Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 5 mm Parallelism < 1' Substrate Germanium Clear Aperture > Ø 22.86 mm Shape Round Thickness Tolerance ±0.1 mm Surface Quality 40-20 scratch-dig Diameter Tolerance +0/-0.2 mm Surface Irregularity < λ (Flatness) Supplier Location New Jersey, USA See product details More from Thorlabs
Vacuum Viewport	650 - 1050 nm (Coating Range)	UV Fused Silica	38.1 mm (1.5") 69.85 mm (2.75", Flange) 38.1 mm (1.5", Unmounted, Window)	In stock	$ 359.72
Product Code Wavelength Range 650 - 1050 nm (Coating Range) Coating BBAR (650 - 1050 nm) Reflectance < 0.5% (650 - 1050 nm, Average) Diameter 38.1 mm (1.5") 69.85 mm (2.75", Flange) 38.1 mm (1.5", Unmounted, Window) Dimensions Ø 38.1 mm (1.5") Thickness 4 mm (Mount, Window) Substrate UV Fused Silica Clear Aperture > Ø 28.7 mm (1.13") Shape Round Thickness Tolerance ±0.2 mm Surface Quality 20-10 scratch-dig Diameter Tolerance +0/-0.1 mm Damage Threshold Pulsed 0.246 J/cm² (0.166 mm, 99 fs, 1 kHz, 800 nm) 7.5 J/cm² (0.133 mm, 10 ns, 10 Hz, 810 nm) Coating Features Broadband Surface Irregularity λ/2 (633 nm, Flatness) Wedge 30' Wedge Tolerance ±10' Applications High-Vacuum Window Material UV Fused Silica Supplier Location New Jersey, USA See product details More from Thorlabs
Flat Window	1000 - 1700 nm	Infrasil	25.4 mm (1")	In stock	$ 364.05
Product Code Wavelength Range 1000 - 1700 nm Coating BBAR (1000 - 1700 nm) Reflectance < 0.25% (Average) Transmittance > 98% (Absolute) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Substrate Infrasil Shape Round Damage Threshold Pulsed > 30 J/cm² (0.23 mm, 10 ns, 10 Hz, 1064 nm) Coating Features Broadband Mount Threaded Mount, SM, SM1 Supplier Location New Jersey, USA See product details More from Thorlabs
Wedged Window	350 - 700 nm (Coating Range)	N-BK7	50.8 mm (2")	In stock	$ 186.94
Product Code Wavelength Range 350 - 700 nm (Coating Range) Coating BBAR (350 - 700 nm) Reflectance < 0.5% (350 - 700 nm, Average, 0°) Diameter 50.8 mm (2") Dimensions Ø 50.8 mm (2") Thickness 12 mm Substrate N-BK7 Clear Aperture > Ø 45.72 mm Shape Round Thickness Tolerance ±0.1 mm Surface Quality 20-10 scratch-dig Diameter Tolerance +0/-0.2 mm Damage Threshold Pulsed 7.5 J/cm² (0.504 mm, 10 ns, 10 Hz, 532 nm) Coating Features Broadband Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs
Flat Window	1000 - 1700 nm	Infrasil	25.4 mm (1")	In stock	$ 342.65
Product Code Wavelength Range 1000 - 1700 nm Coating BBAR (1000 - 1700 nm) Reflectance < 0.25% Transmittance > 98% (Absolute) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 5 mm Parallelism < 3' Substrate Infrasil Clear Aperture > Ø 21.59 mm Shape Round Thickness Tolerance ±0.3 mm Surface Quality 10-5 scratch-dig Diameter Tolerance +0/-0.2 mm Damage Threshold Pulsed > 30 J/cm² (0.23 mm, 10 ns, 10 Hz, 1064 nm) Coating Features Broadband Mount Unmounted Supplier Location New Jersey, USA See product details More from Thorlabs
Vacuum Viewport	650 - 1050 nm (Coating Range)	UV Fused Silica	50.8 mm (2")	In stock	$ 205.62
Product Code Wavelength Range 650 - 1050 nm (Coating Range) Coating BBAR (650 - 1050 nm) Reflectance < 0.5% (650 - 1050 nm, Average) Diameter 50.8 mm (2") Dimensions Ø 50.8 mm (2") Thickness 12 mm Substrate UV Fused Silica Clear Aperture > Ø 45.72 mm Shape Round Thickness Tolerance ±0.1 mm Surface Quality 20-10 scratch-dig Diameter Tolerance +0/-0.2 mm Damage Threshold Pulsed 7.5 J/cm² (0.133 mm, 10 ns, 10 Hz, 810 nm) Coating Features Broadband Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs
Wedged Window	350 - 2000 nm (Uncoated)	N-BK7	38.1 mm (1.5")	In stock	$ 127.03
Product Code Wavelength Range 350 - 2000 nm (Uncoated) Coating Uncoated Diameter 38.1 mm (1.5") Dimensions Ø 38.1 mm (1.5") Thickness 8 mm Substrate N-BK7 Clear Aperture > Ø 34.29 mm Shape Round Thickness Tolerance ±0.1 mm Surface Quality 10-5 scratch-dig Diameter Tolerance +0/-0.2 mm Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs
Wedged Window	350 - 700 nm (Coating Range)	UV Fused Silica	25.4 mm (1")	In stock	$ 137.27
Product Code Wavelength Range 350 - 700 nm (Coating Range) Coating BBAR (350 - 700 nm) Reflectance < 0.5% (350 - 700 nm, Average) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 5 mm Substrate UV Fused Silica Clear Aperture > Ø 22.86 mm Shape Round Thickness Tolerance ±0.1 mm Surface Quality 20-10 scratch-dig Diameter Tolerance +0/-0.2 mm Damage Threshold Pulsed 7.5 J/cm² (0.491 mm, 10 ns, 10 Hz, 532 nm) Coating Features Broadband Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs
Wedged Window	180 - 8000 nm (Uncoated)	Calcium Fluoride	12.7 mm (0.5")	In stock	$ 105.19
Product Code Wavelength Range 180 - 8000 nm (Uncoated) Coating Uncoated Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 3 mm Substrate Calcium Fluoride Clear Aperture > Ø 11.4 mm Shape Round Thickness Tolerance ±0.1 mm Surface Quality 40-20 scratch-dig Diameter Tolerance +0/-0.2 mm Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs
Flat Window	1650 - 3000 nm (Coating Range)	Zinc Selenide	25.4 mm (1")	In stock	$ 240.23
Product Code Wavelength Range 1650 - 3000 nm (Coating Range) Coating BBAR (1650 - 3000 nm) Reflectance < 1% (Average) < 2% (0°, Absolute) Transmittance > 94% (Average) > 90% (0°, Absolute) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 5 mm Parallelism < 1' Substrate Zinc Selenide Clear Aperture > Ø 22.9 mm Shape Round Thickness Tolerance ±0.3 mm Surface Quality 40-20 scratch-dig Diameter Tolerance +0/-0.2 mm Damage Threshold Pulsed 200 J/cm² (0.099 mm, 250 μs, 2 Hz, 2940 nm) Coating Features Broadband Supplier Location New Jersey, USA See product details More from Thorlabs
Wedged Window	700 - 1100 nm	UV Fused Silica	25.4 mm (1")	In stock	$ 123.30
Product Code Wavelength Range 700 - 1100 nm Coating BBAR (700 - 1100 nm) Reflectance < 1% (700 - 1100 nm, 45°, Average) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 5 mm Substrate UV Fused Silica Clear Aperture > Ø 22.86 mm Shape Round Thickness Tolerance ±0.1 mm Surface Quality 20-10 scratch-dig Diameter Tolerance +0/-0.2 mm Coating Features Broadband Surface Irregularity < λ/10 (Flatness) Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs
Beam Sampler	650 - 1050 nm (Coating Range)	UV Fused Silica	50.8 mm (2")	In stock	$ 155.15
Product Code Wavelength Range 650 - 1050 nm (Coating Range) Coating BBAR (650 - 1050 nm) Reflectance < 1% (Average) Diameter 50.8 mm (2") Dimensions Ø 50.8 mm (2") Substrate UV Fused Silica Clear Aperture > 45.72 mm Shape Round Surface Quality 20-10 scratch-dig Diameter Tolerance +0/-0.2 mm Damage Threshold Pulsed 0.246 J/cm² (0.166 mm, 99 fs, 1 kHz, 800 nm) 7.5 J/cm² (0.133 mm, 10 ns, 10 Hz, 810 nm) Coating Features Broadband Surface Irregularity λ/10 (633 nm, Flatness) Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs
Flat Window	1000 - 1700 nm	Fused Silica Infrasil	25.4 mm (1") 6.4 mm (0.25", Outer, Fill Tube)	In stock	$ 552.12
Product Code Wavelength Range 1000 - 1700 nm Reflectance < 0.25% (Average) Transmittance > 98% (Absolute) Diameter 25.4 mm (1") 6.4 mm (0.25", Outer, Fill Tube) Dimensions Ø 25.4 x 48 mm Substrate Fused Silica Infrasil Clear Aperture > Ø 20 mm Shape Cylindrical Angle Tolerance ±1° Angle 0° Length Tolerance ±3 mm Length 48 mm (Path) 50 mm (Cell) Window Material Infrasil302 Supplier Location New Jersey, USA See product details More from Thorlabs
Wedged Window	180 - 8000 nm (Uncoated)	Calcium Fluoride	50.8 mm (2")	In stock	$ 317.15
Product Code Wavelength Range 180 - 8000 nm (Uncoated) Coating Uncoated Diameter 50.8 mm (2") Dimensions Ø 50.8 mm (2") Thickness 8 mm Substrate Calcium Fluoride Clear Aperture > Ø 45.72 mm Shape Round Thickness Tolerance ±0.4 mm Surface Quality 60-40 scratch-dig Diameter Tolerance +0/-0.2 mm Surface Irregularity < λ/4 (Flatness) Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs
Wedged Window	350 - 700 nm (Coating Range)	N-BK7	12.7 mm (0.5")	In stock	$ 90.89
Product Code Wavelength Range 350 - 700 nm (Coating Range) Coating BBAR (350 - 700 nm) Reflectance < 0.5% (350 - 700 nm, Average, 0°) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 3 mm Substrate N-BK7 Clear Aperture > Ø 11.43 mm Shape Round Thickness Tolerance ±0.1 mm Surface Quality 20-10 scratch-dig Diameter Tolerance +0/-0.2 mm Damage Threshold Pulsed 7.5 J/cm² (0.504 mm, 10 ns, 10 Hz, 532 nm) Coating Features Broadband Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs
Wedged Window	650 - 1050 nm (Coating Range)	UV Fused Silica	25.4 mm (1")	In stock	$ 137.27
Product Code Wavelength Range 650 - 1050 nm (Coating Range) Coating BBAR (650 - 1050 nm) Reflectance < 0.5% (650 - 1050 nm, Average) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 5 mm Substrate UV Fused Silica Clear Aperture > Ø 22.86 mm Shape Round Thickness Tolerance ±0.1 mm Surface Quality 20-10 scratch-dig Diameter Tolerance +0/-0.2 mm Damage Threshold Pulsed 7.5 J/cm² (0.133 mm, 10 ns, 10 Hz, 810 nm) Coating Features Broadband Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs
Flat Window	-	Diamond	10 mm	In stock	$ 1425.37
Product Code Coating Uncoated Diameter 10 mm Dimensions Ø 10 mm Thickness 0.5 mm Substrate Diamond Shape Round Thickness Tolerance ±0.05 mm Diameter Tolerance ±0.1 mm Surface Irregularity 632.8 nm (Flatness) Refractive Index 2.376 (10600 nm) 2.386 (1550 nm) 2.392 (1064 nm) Surface Roughness < 15 nm Supplier Location New Jersey, USA See product details More from Thorlabs
Wedged Window	1050 - 1700 nm (Coating Range)	N-BK7	38.1 mm (1.5")	In stock	$ 154.43
Product Code Wavelength Range 1050 - 1700 nm (Coating Range) Coating BBAR (1050 - 1700 nm) Reflectance < 0.5% (1050 - 1700 nm, Average, 0°) Diameter 38.1 mm (1.5") Dimensions Ø 38.1 mm (1.5") Thickness 8 mm Substrate N-BK7 Clear Aperture > Ø 34.29 mm Shape Round Thickness Tolerance ±0.1 mm Surface Quality 20-10 scratch-dig Diameter Tolerance +0/-0.2 mm Damage Threshold Pulsed 7.5 J/cm² (0.123 mm, 10 ns, 10 Hz, 1542 nm) Coating Features Broadband Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs
Wedged Window	350 - 700 nm (Coating Range)	N-BK7	38.1 mm (1.5")	In stock	$ 154.43
Product Code Wavelength Range 350 - 700 nm (Coating Range) Coating BBAR (350 - 700 nm) Reflectance < 0.5% (350 - 700 nm, Average, 0°) Diameter 38.1 mm (1.5") Dimensions Ø 38.1 mm (1.5") Thickness 8 mm Substrate N-BK7 Clear Aperture > Ø 34.29 mm Shape Round Thickness Tolerance ±0.1 mm Surface Quality 20-10 scratch-dig Diameter Tolerance +0/-0.2 mm Damage Threshold Pulsed 7.5 J/cm² (0.504 mm, 10 ns, 10 Hz, 532 nm) Coating Features Broadband Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs