Products: Fused Silica Laser Windows

Fused Silica Laser Windows image

Acton Optics & Coatings windows are made from select grades of the finest available optical materials. VUV/UV windows are suitable for a large range of VUV-UV applications. Flat laser windows are suitable for high-power laser applications and as substrates for mirrors and beamsplitters.

Note: Excimer-grade CaF2 and MgF2 substrates are available for laser cavity optics and are also available with transmittance traces for an additional charge. Contact us at for more information.


Fused Silica Laser Windows

Part Number Diameter Thickness Substrate Material
W.5D-FL 0.5” (12.7mm) 0.250” (6.35mm) Corning 7980 0C or equivalent
W1D-FL 1.0” (25.4mm) 0.250” (6.35mm) Corning 7980 0C or equivalent
W1.5D-FL 1.5” (38.1mm) 0.200” (5mm) Corning 7980 0C or equivalent
W2D-FL 2.0” (50.8mm) 0.375” (9.53mm) Corning 7980 0C or equivalent


Material UV Laser-Grade Fused Silica
Diameter Tolerance +0.00/-0.005”
Thickness Tolerance +/-0.25mm
Surface Figure Both sides 1/10 Wave @ 632.8nm
Parallelism 3 arc min
Scratch/Dig 20-10
Chamfer 0.5mm x 45°
Clear Aperture Central 85%

Acton Optics & Coatings can supply custom optics for your OEM applications.

UV laser grade fused silica transmission properties