Substrate
Material | UV grade fused silica |
S1 Surface flatness | λ/10 at 633 nm |
S1 Surface quality | 20-10 scratch&dig (MIL-PRF-13830B) |
S2 Surface quality | Commercial polish |
Diameter tolerance | +0.00 mm / -0.12 mm |
Thickness tolerance | ±0.25 mm |
Wedge | < 3 min |
Chamfer | 0.3 mm at 45° typical |
Coating
Technology | Ion Beam Sputtering (IBS) |
Adhesion and Durability | Per MIL-C-675A, Insoluble in lab solvents |
Clear apterture | Exceeds 85% of diameter |
Coated surface flatness | λ/8 at 633 nm over 80% of diameter |
Laser Induced Damage Threshold | Measured at design wavelength, 10 ps pulse, 20 kHz |
EKSMA Optics High Power IBS Coated Mirrors
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New ultra high damage threshold laser mirrors are designed for applications with picosecond lasers. These mirrors are produced using advanced IBS coating technology. Mirrors design wavelengths are 515 nm or 1030 nm with reflection values R>99.9%.
Laser induced damage threshold was measured at mirror design wavelength with 10 ps pulse, 20 kHz under ISO standard 21254-2 1000-on-1 conditions.