Cr4+:YAG is an excellent saturable absorber material. It is used as a passive Q-switched crystal and is widely applied in diode-pumped or lamp-pumped Nd:YAG, Nd:YLF, Nd:YVO4, and other Nd or Yb doped lasers with a wavelength of 0.8~1.2um.
Good thermal conductivity
High damage threshold
Stable and reliable
SPECIFICATIONS | |
Orientation | <100> or <111>±5° |
Dimension | Diameter:3~12mm,H×W:2×2~30×30mm(Customized available) |
Dimension Tolerance | Φ:+0/-0.04mm,L:+0.02/-0mm |
Perpendicularity | ≤5′ |
Parallelism | ≤10″ |
Chamfer | ≤0.15±0.05mm |
Surface Quality | 10/5 (MIL-PRF-13830B) |
Barrel | Fine Ground |
Flatness | ≤λ/10@632.8nm |
Coating | AR coating: R<0.15%@1064nm |
Damage Threshold | ≥1GW/cm2@1064nm,10ns,10Hz |
PHYSICAL AND CHEMICAL PROPERTIES | |||
Crystal Structure | Cubic | ||
Melting Point | 1970° | ||
Density | 4.56±0.04g/cm3 | ||
Specific Heat | 0.59J/gNaN³@0~20℃ | ||
Elastic Modulus | 310GPa | ||
Young's Modulus | 3.17×104Kg/mm2 | ||
Mohs Hardness | 8.5 | ||
Tensile Strength | 0.13~0.26GPa | ||
Poisson’s Ratio | 0.3 | ||
Thermal Expansion Coefficients | <100>:8.2×10-6/K@0~250℃ | ||
<110>:7.7×10-6/K@0~250℃ | |||
<111>:7.8×10-6/K@0~250℃ | |||
Thermal Conductivity | 14W/m/K@20℃ | ||
10.5W/m/K@100℃ | |||
Thermal Optical Coefficient | dn/dT=7.3×10-6/K | ||
Refractive Index | 1.82@1064nm | ||
Solubility | Insoluble in water, slightly soluble in ordinary acid | ||