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	Coating	Substrate	Availability	Price (USD)
Wedged Window	2000 - 5000 nm	BBAR (2000 - 5000 nm)	Silicon	In stock	$ 163.05
Product Code Wavelength Range 2000 - 5000 nm Coating BBAR (2000 - 5000 nm) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Substrate Silicon Shape Round Coating Features Broadband Wedge 30' Supplier Location New Jersey, USA See product details More from Thorlabs
Flat Window	230 - 450 nm	BBAR (230 - 450 nm)	UV Fused Silica	In stock	$ 243.38
Product Code Wavelength Range 230 - 450 nm Coating BBAR (230 - 450 nm) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Substrate UV Fused Silica Shape Round Coating Features Broadband Mount Threaded Mount, SM, SM5 Supplier Location New Jersey, USA See product details More from Thorlabs
Wedged Window	700 - 1100 nm	BBAR (700 - 1100 nm)	UV Fused Silica	In stock	$ 115.23
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 Surface Quality 20-10 scratch-dig Thickness Tolerance ±0.1 mm 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
Flat Window	230 - 450 nm	BBAR (230 - 450 nm)	UV Fused Silica	In stock	$ 340.23
Product Code Wavelength Range 230 - 450 nm Coating BBAR (230 - 450 nm) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Substrate UV Fused Silica Shape Round Coating Features Broadband Mount Threaded Mount, SM, SM1 Supplier Location New Jersey, USA See product details More from Thorlabs
Flat Window	610 - 860 nm (Coating Range)	BBAR (610 - 860 nm)	N-BK7	In stock	$ 134.24
Product Code Wavelength Range 610 - 860 nm (Coating Range) Coating BBAR (610 - 860 nm) Reflectance < 0.5% (610 - 860 nm, Average) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 5 mm Parallelism < 5'' Substrate N-BK7 Clear Aperture > 22.86 mm Shape Round Surface Quality 10-5 scratch-dig Damage Threshold Pulsed 7.5 J/cm² (0.133 mm, 10 ns, 10 Hz, 810 nm) Thickness Tolerance ±0.3 mm Diameter Tolerance +0/-0.2 mm Coating Features Broadband Surface Irregularity < λ/10 (Flatness) Supplier Location New Jersey, USA See product details More from Thorlabs
Flat Window	4500 - 7500 nm (Coating Range)	BBAR (4500 - 7500 nm)	Zinc Selenide	In stock	$ 202.65
Product Code Wavelength Range 4500 - 7500 nm (Coating Range) Coating BBAR (4500 - 7500 nm) Reflectance < 1% (Average) < 2% (0°, Absolute) Transmittance > 97% (Average) > 94% (0°, Absolute) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 3 mm Parallelism < 1' Substrate Zinc Selenide Clear Aperture > Ø 11.4 mm Shape Round Surface Quality 40-20 scratch-dig Thickness Tolerance ±0.1 mm Diameter Tolerance +0/-0.2 mm Coating Features Broadband Supplier Location New Jersey, USA See product details More from Thorlabs
Flat Window	310 - 2700 nm	-	N-BK7	In stock	$ 114.05
Product Code Wavelength Range 310 - 2700 nm Reflectance < 0.3% (1020 - 1080 nm, per Surface, Average) < 1% (450 - 700 nm, per Surface, Average) Diameter 42 mm (1.65") Dimensions Ø 42 mm (1.65") Thickness 1.6 mm (0.06") Parallelism < 2' Substrate N-BK7 Clear Aperture Ø 40 mm Shape Round Surface Quality 20-10 scratch-dig Damage Threshold Pulsed 20 J/cm² (1 mm, 10 ns, 10 Hz, 1064 nm) Thickness Tolerance ±0.1 mm Diameter Tolerance +0/-0.15 mm Transmitted Wavefront Error < λ (633 nm) Supplier Location New Jersey, USA See product details More from Thorlabs
Flat Window	523 - 532 nm (Coating Range)	BBAR (523 - 532 nm)	N-BK7	In stock	$ 134.24
Product Code Wavelength Range 523 - 532 nm (Coating Range) Coating BBAR (523 - 532 nm) Reflectance < 0.5% (523 - 532 nm, Average) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 5 mm Parallelism < 5'' Substrate N-BK7 Clear Aperture > 22.86 mm Shape Round Surface Quality 10-5 scratch-dig Damage Threshold Pulsed 10 J/cm² (0.226 mm, 10 ns, 10 Hz, 532 nm) Thickness Tolerance ±0.3 mm Diameter Tolerance +0/-0.2 mm Coating Features Broadband Surface Irregularity < λ/10 (Flatness) Supplier Location New Jersey, USA See product details More from Thorlabs
Flat Window	600 - 16000 nm (Uncoated)	Uncoated	Zinc Selenide	In stock	$ 158.00
Product Code Wavelength Range 600 - 16000 nm (Uncoated) Coating Uncoated Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 3 mm Parallelism < 1' Substrate Zinc Selenide Clear Aperture > Ø 11.4 mm Shape Round Surface Quality 40-20 scratch-dig Thickness Tolerance ±0.1 mm Diameter Tolerance +0/-0.2 mm Surface Irregularity λ/2 (Flatness) Supplier Location New Jersey, USA See product details More from Thorlabs
Wedged Window	2000 - 5000 nm (Coating Range)	BBAR (2000 - 5000 nm)	Sapphire	In stock	$ 109.29
Product Code Wavelength Range 2000 - 5000 nm (Coating Range) Coating BBAR (2000 - 5000 nm) Reflectance < 1.5% (Average) < 1.75% (2000 - 4000 nm, per Surface, Both Sides, Average) < 3% (2000 - 5000 nm, per Surface, Absolute) Transmittance > 92% (2000 - 5000 nm, Average) > 94% (Average) > 92% (2000 - 4000 nm, Absolute) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 3 mm Substrate Sapphire Clear Aperture > Ø 11.43 mm Shape Round Surface Quality 60-40 scratch-dig Damage Threshold Pulsed 200 J/cm² (0.102 mm, 200 μs, 2 Hz, 2940 nm) Thickness Tolerance ±0.3 mm Diameter Tolerance +0/-0.2 mm Coating Features Broadband Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs
Flat Window	< 1000 - 1700 nm (0.25%)	BBAR (1000 - 1700 nm)	Infrasil	In stock	$ 320.23
Product Code Wavelength Range < 1000 - 1700 nm (0.25%) Coating BBAR (1000 - 1700 nm) Reflectance < 0.25% 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 Surface Quality 10-5 scratch-dig Damage Threshold Pulsed > 30 J/cm² (0.23 mm, 10 ns, 10 Hz, 1064 nm) Thickness Tolerance ±0.3 mm Diameter Tolerance +0/-0.2 mm Coating Features Broadband Mount Unmounted Supplier Location New Jersey, USA See product details More from Thorlabs
Flat Window	1050 - 1700 nm (Coating Range)	BBAR (1050 - 1700 nm)	UV Fused Silica	In stock	$ 118.80
Product Code Wavelength Range 1050 - 1700 nm (Coating Range) Coating BBAR (1050 - 1700 nm) Reflectance < 0.5% (1050 - 1700 nm, Average) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 5 mm Parallelism < 5'' Substrate UV Fused Silica Clear Aperture > Ø 22.86 mm Shape Round Surface Quality 20-10 scratch-dig Damage Threshold Pulsed 7.5 J/cm² (0.189 mm, 10 ns, 10 Hz, 1542 nm) Thickness Tolerance ±0.3 mm Coating Features Broadband Surface Irregularity λ/10 (Flatness) Supplier Location New Jersey, USA See product details More from Thorlabs
Beam Sampler	245 - 400 nm	BBAR (245 - 400 nm)	UV Fused Silica	In stock	$ 74.55
Product Code Wavelength Range 245 - 400 nm Coating BBAR (245 - 400 nm) Reflectance < 1% (Average) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Substrate UV Fused Silica Clear Aperture > 22.86 mm Shape Round Surface Quality 20-10 scratch-dig Damage Threshold Pulsed 5 J/cm² (0.35 mm, 10 ns, 10 Hz, 355 nm) Diameter Tolerance +0/-0.2 mm 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	1050 - 1700 nm (Coating Range)	BBAR (1050 - 1700 nm)	UV Fused Silica	In stock	$ 118.80
Product Code Wavelength Range 1050 - 1700 nm (Coating Range) Coating BBAR (1050 - 1700 nm) Reflectance < 0.5% (1050 - 1700 nm, Average) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 1 mm Parallelism < 1' Substrate UV Fused Silica Clear Aperture > 22.86 mm Shape Round Surface Quality 20-10 scratch-dig Damage Threshold Pulsed 7.5 J/cm² (0.189 mm, 10 ns, 10 Hz, 1542 nm) Thickness Tolerance ±0.1 mm Coating Features Broadband Transmitted Wavefront Error λ/4 Supplier Location New Jersey, USA See product details More from Thorlabs
Flat Window	-	Uncoated	Diamond	In stock	$ 545.70
Product Code Coating Uncoated Diameter 5 mm Dimensions Ø 5 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
Flat Window	7000 - 12000 nm (Coating Range)	BBAR (7000 - 12000 nm)	Germanium	In stock	$ 230.46
Product Code Wavelength Range 7000 - 12000 nm (Coating Range) Coating BBAR (7000 - 12000 nm) Reflectance < 1% (Average) < 2% (Absolute) Transmittance > 94% (Average) > 85% (Average) > 90% (11000 - 12000 nm, Absolute) > 80% (Absolute) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 5 mm Parallelism < 1' Substrate Germanium Clear Aperture > Ø 22.9 mm Shape Round Surface Quality 40-20 scratch-dig Damage Threshold Pulsed 0.5 J/cm² (0.478 mm, 100 ns, 1 Hz, 10600 nm) Thickness Tolerance ±0.1 mm Diameter Tolerance +0/-0.2 mm Coating Features Broadband Surface Irregularity < λ (Flatness) Supplier Location New Jersey, USA See product details More from Thorlabs
Wedged Window	1650 - 3000 nm (Coating Range)	BBAR (1650 - 3000 nm)	Sapphire	In stock	$ 128.11
Product Code Wavelength Range 1650 - 3000 nm (Coating Range) Coating BBAR (1650 - 3000 nm) Reflectance < 1% (Average, per Surface, Both Sides) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 5 mm Substrate Sapphire Clear Aperture > Ø 22.9 mm Shape Round Surface Quality 60-40 scratch-dig Damage Threshold Pulsed 2 J/cm² (0.339 mm, 62.5 Hz, 10 ns, 2050 nm) Thickness Tolerance ±0.1 mm Diameter Tolerance +0/-0.2 mm Coating Features Broadband Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs
Wedged Window	150 - 4500 nm (Uncoated)	Uncoated	Sapphire	In stock	$ 88.51
Product Code Wavelength Range 150 - 4500 nm (Uncoated) Coating Uncoated Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 3 mm Substrate Sapphire Clear Aperture > Ø 11.43 mm Shape Round Surface Quality 60-40 scratch-dig Thickness Tolerance ±0.1 mm Diameter Tolerance +0/-0.2 mm Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs
Wedged Window	185 - 2100 nm (Uncoated)	Uncoated	UV Fused Silica	In stock	$ 174.71
Product Code Wavelength Range 185 - 2100 nm (Uncoated) Coating Uncoated 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 Surface Quality 10-5 scratch-dig Thickness Tolerance ±0.1 mm Diameter Tolerance +0/-0.2 mm Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs
Wedged Window	650 - 1050 nm (Coating Range)	BBAR (650 - 1050 nm)	UV Fused Silica	In stock	$ 128.29
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 Surface Quality 20-10 scratch-dig Damage Threshold Pulsed 7.5 J/cm² (0.133 mm, 10 ns, 10 Hz, 810 nm) Thickness Tolerance ±0.1 mm Diameter Tolerance +0/-0.2 mm Coating Features Broadband Wedge 30' Wedge Tolerance ±10' Supplier Location New Jersey, USA See product details More from Thorlabs