Available Options
The 20QM20EM.15 is a High Energy Excimer Laser Mirror, 50.8 mm in diameter, 6.35mm thick, and is coated for 248 nm, optimized for 45° angle of incidence.
High-Energy Nd:YAG Laser Mirrors are manufactured using high purity fused silica substrates and ultra hard dielectric coatings. This mirror has been tested and certified to withstand high-energy pulses and have a high damage threshold. Meticulous production procedures guarantee they will withstand fluences greater than 10 J/cm2 at 1064 nm. The coating is highly durable and will withstand repeated cleaning.
We offer Nd:YAG mirrors for the fundamental 1064, frequency-doubled 532, frequency-tripled 354.7, and frequency-quadrupled 266 nm laser lines at either 0° or 45° incidence angle. A dual-wavelength mirror for 1064 and 532 nm is also available. Reflectivity is greater than 99.7% for s-polarization and greater than 99% for p-polarization. These mirrors are available in 25.4 or 50.8 mm diameters.
feature | |
Angle of Incidence | 45° |
Chamfers | 0.38–1.14 mm face width |
Chamfers Angle Tolerance | 45° ±15° |
Cleaning | See How to Clean Optics |
Clear Aperture | ≥central 80% of diameter |
Coating Code | EM.15 |
Coating Type | Low Loss Dielectric |
Diameter | 50.8 mm |
Diameter Tolerance | +0/-0.25 mm |
Material | UV Grade Fused Silica |
Mirror Shape | Round |
Reflectivity | Rs, Rp>99% @ 248 nm |
Surface Flatness | λ/10 at 632.8 nm |
Surface Quality | 10-5 scratch-dig |
Thickness | 9.65 mm |
Thickness Tolerance | ±0.5 mm |
Wavelength Range | 248 nm |
Wavelength Region | UV |
Wedge | ≤3 arc min |