Sorry, this product is no longer offered for sale. The recommended replacement product is 20QM20EM.15.
High Energy Excimer Laser Mirror, 50.8 mm, 0°, 248 nm
The 20QM20EM.10 is a 50.8 mm diameter, 6.35 mm thick High Energy Excimer Laser Mirror coated for 248 nm. Its reflectivity at this wavelength is greater than 99% for both s- and p-polarization, and it is optimized for 0° AOI.
Newport's High Energy Excimer Laser Mirrors feature ultra-hard dielectric coatings on UV Grade Fused Silica substrates to resist damage from high power lasers. The coating is highly durable and will withstand repeated cleaning.
Specifications
- Wavelength RegionUV
- Wavelength Range248 nm
- Mirror ShapeRound
- Diameter50.8 mm
- MaterialUV Grade Fused Silica
- Coating TypeLow Loss Dielectric
- Coating CodeEM.10
- ReflectivityRavg>99% @ 248 nm
- Surface Quality10-5 scratch-dig
- Surface Flatnessλ/10 at 632.8 nm
- Wedge≤3 arc min
- Angle of Incidence0°
- Clear Aperture≥central 80% of diameter
- Thickness9.65 mm
- Thickness Tolerance±0.5 mm
- Diameter Tolerance+0/-0.25 mm
- Chamfers0.38–1.14 mm face width
- Chamfers Angle Tolerance45° ±15°
- Cleaning
- Damage Threshold500 kW/cm2
500 mJ/cm2 @248 nm, 10ns, 10Hz
