Yb:YAG has characteristics of high doping concentration, high conversion efficiency, broad absorption bandwidth and long fluorescence lifetime. It also features a relatively long lifetime of the upper laser level. It is an excellent diode-pumped laser crystal material for high power solid-state laser.
High optical quality High thermal conductivity, High compressive strength No excited-state absorption or up-conversion Low fractional heating, less than Nd:YAG |
SPECIFICATIONS | |
Concentration | 0.5at%~25at% |
Dimensions | Diameter:2mm~20mm, Length:5~150mm(Customized available) |
Dimensions Tolerance | Φ:+0/-0.04mm,L:+0.5/-0mm |
Perpendicularity | ≤5′ |
Parallelism | ≤10″ |
Clear Aperture | ≥95% |
Surface Quality表 | 10/5(MIL-PRF-13830B) |
Barrel | Fine Ground, Polishing, Grooving |
Flatness | ≤λ/10@632.8nm |
Wavefront Distortion | ≤1/8λ per inch@632.8nm |
Extinction Ratio | ≥28dB |
Coating | AR coating:R<0.15%@1030nm |
Damage Threshold | ≥1GW/cm2@1064nm,10ns,10Hz |
OPTICAL PROPERTIES | |||
Laser Transition | 2F5/2→ 2F7/2 | ||
Wavelength | 1030nm | ||
Photon Energy | 1.93×10-19J@1030nm | ||
Emission Line-width | 9nm | ||
Fluorescence Lifetime | 1.2ms | ||
Absorption Wavelength of Diode Pumped | 940nm,970nm | ||
Pump Absorption Bandwidth | 8nm | ||
PHYSICAL AND CHEMICAL PROPERTIES | |||
Crystal Structure | Tetragonal | ||
Melting Point | 1970°C | ||
Density | 4.56±0.04g/cm3 | ||
Specific Heat | 0.59J/gNaN3@0~20°C | ||
Elastic Modulus | 310GPa | ||
Young's Modulus | 3.17×104Kg/mm2 | ||
Mohs Hardness | 8.5 | ||
Poisson’s Ratio | 0.3 | ||
Tensile Strength | 0.13~0.26GPa | ||
Thermal Expansion Coefficients | <100>:8.2×10-6/K@0~250°C | ||
<110>:7.7×10-6/K@0~250°C | |||
<111>:7.8×10-6/K@0~250°C | |||
Thermal Conductivity | 14W/m/K@20°C | ||
10.5W/m/K@100°C | |||
Thermal Optical Coefficient | 7.3×10-6/K | ||
Index of Refraction | 1.82@1030nm | ||