Cr:YAG Laser Crystal
Passive Q-switching is preferred for simplicity of manufacture and operation, low cost and reduced system size and weight. Cr4+:YAG is an excellent crystal for passively Q-switching diode pumped or lamp-pumped Nd:YAG, Nd:YLF, Yb:YAG or other Nd and Yb doped lasers at wavelength from 1.0 to 1.2um.
Advantages
1 ) High power laser pulses without electro-optic Q-switches
2 ) Good thermal conductivity
3 ) High damage threshold
4 ) More robust and stable than dyes or color centers
Specifications
Material | Cr 4+:YAG |
Orientation | <111> or <110> or <100> |
Initial absorption coefficient | 0.5-7/cm@1064nm |
Diameter tolerance | Diameter:+0/-0.02mm, W×H:+/-0.1mm |
Length tolerance | +/-0.5mm |
Initial transmittance | 5%-95%@1064nm |
Dimension | Diameter:3-12mm, H×W:2×2-30×30mm(upon customer’s request) |
Barrel finish | Ground finish 400#Grit |
Clear aperture | >90% central area |
Parallelism | <10 arc seconds |
Perpendicularity | <5 arc minutes |
Flatness | |
Scratch/Dig | 10/5@MIL-0-13830A |
Anti-Reflection coating | R<0.15%@1064nm per surface |
Damage threshold | >750MW/cm2@1064nm 10ns 10HZ |
Properties
Chemical Formula | Cr4+:Y3Al5O12 |
Crystal Structure | Cubic |
Melting Point | 1970° |
Density | 4.55g/cm3 |
Mohs hardness | 8.5 |
Wavelength | 950nm-1100nm |