Precision windows

Ideal for interferometer flats, laser windows, beamsplitter substrates, or parallel plates.      

Material: BK7 and Fused silica typically. Other Glass, Sapphire, Quartz, Germanium(Ge), Silicon(Si) are also available.     

General Specifications 

Commercial Quality Windows

Non-precision windows commonly used for sight glasses, instrument windows, beamsplitter substrates, vacuum windows, etc.     

Specifications:       

Diameter Tolerance: +0.0, -0.1mm    

Thickness Tolerance: ± 0.2mm    

Clear Aperture: >85%    

Parallelism: 1'    

Surface Quality: 60-40 scratch and dig     

Flatness: λ/4 @632.8nm     

Protective Bevel     

AR coating is available by request.    

R<0.2%@single wavelength     

Ravg<0.5%@broadband wavelength range    

Laser Windows

With perfect surface polishing, the window have extremly smooth surface to fit fot the high power application.    

It also can be used as substrate for laser mirror, laser coupler, etc.    

Material: BK7 or Fused silica     

Specifications:      

Diameter Tolerance: +0.0, -0.1mm     

Thickness Tolerance: ± 0.2mm     

Clear Aperture: >85%     

Surface Quality: Better than 10-5     

Flatness: Better than λ/10 @632.8nm       

Parallelism: up to 5"    

Protective Bevel     

High damage threshold AR coating is availabe.     

e.g. Damage threshold >2GW/cm^2 (pulse laser) or >5KW/cm^2 (CW laser) for AR coating at 1064nm.    

Customer designed special windows are available!