The 20Q20XAR.18 High-Energy Laser Windows is specially designed to eliminate losses in vacuum cell applications and can be used as a vacuum window, convection barrier, or interferometer compensator plate. This 2 inch (50.8 mm) diameter optic is precision polished, select grade fused silica coated with hard refractory multilayers for very high damage threshold. A 30 arc min wedge between the polished faces eliminates fringe patterns and cavity feedback. Newports XAR.18 broadband IR antireflection coating is applied for a 1000 to 1550 nm wavelength range.
Технические характеристики
- Material UV Grade Fused Silica
- Antireflection Coating 1000-1550 nm
- Coating Code XAR.18
- Damage Threshold 10 J/cm2, 20 ns pulses, 20 Hz at 1064 nm
- Diameter 50.8 mm
- Diameter Tolerance +0/-0.13 mm
- Thickness 9.4 mm
- Thickness Tolerance ±0.38 mm
- Surface Flatness &lambda,/10 @ 632.8 nm
- Surface Quality 15-5 scratch-dig
- Clear Aperture Central 80% of diameter
- Chamfers 0.38–1.14 mm face width
- Wedge 30 ±15 arc min
- Cleaning See How to Clean Optics
