The 20QM20HM.45 is a 50.8 mm diameter, 9.65 mm thick High Energy Nd:YAG Laser Mirror coated for the fundamental 354.7 nm wavelengths. Its reflectivity at this wavelength is greater than 99% for both s- and p-polarization, and it is optimized for 45° AOI.
Технические характеристики
- Wavelength Region UV
- Wavelength Range 354.7 nm
- Mirror Shape Round
- Diameter 50.8 mm
- Material UV Grade Fused Silica
- Coating Type Ultra-hard Dielectric
- Coating Code HM.45
- Surface Quality 10-5 scratch-dig
- Surface Flatness &lambda,/10 at 632.8 nm
- Wedge &le,3 arc min
- Angle of Incidence 45°
- Clear Aperture &ge,central 80% of diameter
- Back Surface λ/5 at 632.8 nm
- Reflectivity Rs>99.7%, Rp>99% @ 354.7 nm
- Thickness 9.65 mm
- Thickness Tolerance ±0.5 mm
- Diameter Tolerance +0/-0.25 mm
- Chamfers 0.38–1.14 mm face width
- Chamfers Angle Tolerance 45° ±15°
- Cleaning See How to Clean Optics
- Damage Threshold 3 KW/cm2 CW
3.5 J/cm2 @ 10 ns, 20 Hz
