The 20QW40-30AR.18 Laser-Grade Parallel Window is parallel to less than 30 arc sec for minimal transmitted beam deviation. This 2 inch (50.8 mm) diameter UV Grade Fused Silica window is 10 mm thick. It has Newports AR.18 broadband IR antireflection coating for a 1000 to 1550 nm wavelength range. For demanding applications, such as intracavity laser applications, holography, and multiphoton imaging, this window has a &lambda,/20 surface flatness and 10-5 scratch-dig significantly reducing unwanted scatter.
Технические характеристики
- Diameter 50.8 mm
- Material UV Grade Fused Silica
- Antireflection Coating 1000-1550 nm
- Surface Flatness &lambda,/20 @ 632.8 nm
- Surface Quality 10-5 scratch-dig
- Thickness 10.0 mm
- Thickness Tolerance ±0.25 mm
- Transmitted Beam Deviation ±30 arc sec
- Wavefront Distortion &lambda,/10 @ 632.8 nm
- Chamfers 0.38–1.14 mm face width
- Chamfers Angle/Tolerance 45° ±15°
- Cleaning See How to Clean Optics
- Clear Aperture Central 85% of diameter
- Diameter Tolerance +0/-0.15 mm
- Coating Code AR.18
- Wedge &le,30 arc sec
- Damage Threshold 7.5 J/cm2, 10 ns pulses, 20 Hz at 1064 nm
