Optical Windows are optical glass with polished faces that are relatively parallel. They are used to protect laser output. Always windows are AR coated to eliminate reflection, so AR coated windows offer improved transmission when used in industrial displays or computer monitors. Their high transmission makes them ideal for most industrial and laser protecting applications.


Ideal Polarizers for Laser Cavities

When oriented at Brewster’s angle (55.57°), s-polarized light is partially reflected, p-polarized light is transmitted without loss. When placed inside a laser cavity Brewster windows cause p-polarized light to have higher effective gain, resulting in the laser’s final output being strongly p-polarized.

brewster window
Diameter Size 6mm To Maximum
Clear Aperture >80%
Thickness Tolerance+0.0, -0.03mm
Wavefront Distortion< lambda/10@633n
Clear Aperture>85% of diameter
Peak Transmission >45%
Bevel0.3 mm x 45°Brewster Window
Surface Quality 20-10 Scratch-Dig
  • Other diameter / thickness available on request
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