CRYLIGHT 社製 Optical Crystals
各モデルの抜粋仕様を下記から確認いただけます。
Large size Sapphire crystals up to 3′ in boule are available from CryLight. As the hardest of oxide crystals, sapphire has a combination of optical and physical properties that make it the best choice for a variety of demanding applications. Sapphire maintains its strength even at high temperatures. It has good thermal properties, excellent electrical and dielectric properties and is resistant to chemical attack. These properties encourage the use of sapphire in aggressive environments where reliability, optical transmission and strength are required. Properties: Features Undoped YAG Crystal is an excellent material for UV-IR optical windows, particularly for high temperature and high energy density applications. The mechanical and chemical stability is comparable to sapphire crystal, but YAG is unique with non-birefringence and available with higher optical homogeneity and surface quality. Up to 3 YAG boule grown by CZ method, as-cut blocks, windows and mirrors are available from CryLight. Specifications Specifications:Sapphire Crystal
Orientation: <001> or <111> +/- 5deg Diameter Tolerance : +0.0 /-0.1mm Thickness Tolerance: +/-0.2mm Surface Quality: better than 80/50 scratch/dig Parallelism: < 30 arcsec Flatness: < λ per 25mm @632.8nm Perpendicularity: < 5 arcmin Wavefront Distortion: < λ/2 @632.8nm Coating: Coating upon Request
Crystal Structure Hexagonal System Lattice a=4.785 Å, c=12.991 Å Density 3.98 g/cm3 Transmission Range 0.15 – 5.5 mm Melting Point 2040 °C Specific Heat 0.418 W·s /g /K Thermal Conductivity 25.12 W/m /K Thermal Shock Resistance 790 W /m Thermal Expansion 5.8×10-6 /K dn/dT, @ 633nm 13×10-6 /K-1 Mohs Hardness 9 Refractive Index 1.83 (0.26mm), 1.76 (0.63mm), 1.58 (5.57mm) YAG Crystal
Orientation: < 111 > +/-5deg Diameter Tolerance : +0.0 /-0.1mm Thickness Tolerance: +/-0.2mm Surface Quality: better than 10/5 scratch/dig Parallelism: < 30 arcsec Flatness: < λ/8 @632.8nm Perpendicularity: < 5 arcmin Wavefront Distortion: < λ/2 @632.8nm Coating: Coating upon Request
Crystal Structure Cubic Density 4.5 g/cm3 Transmission Range 250 – 5000 nm Melting Point 1970 °C Specific Heat 0.59 W·s /g /K Thermal Conductivity 14 W/m /K Thermal Shock Resistance 790 W /m Thermal Expansion 6.9×10-6 /K dn/dT, @ 633nm 7.3×10-6 /K-1 Mohs Hardness ~ 8.5 Refractive Index 1.8245 @ 0.8mm, 1.8197 @ 1.0mm, 1.8121 @ 1.4mm