Chromium-doped Yttrium Aluminum Garnet (Cr4+:YAG) Passive Q-Switched Crystals be applied to passively Q-switching diode pumped of Nd:YAG, Nd:YLF, Nd:YVO4 lasers at wavelength from 0.8 to 1.2 µm.
Property | Value |
---|---|
Orientation | [100] or [110] |
Initial absorption coefficient | 0.1~8.5 cm-1 @1064 nm |
Initial transmission | 3%~98% |
Wavefront distortion | <λ/8 @ 632.8nm |
Thickness/Diameter Tolerance | ±0.05 mm |
Surface Flatness | <λ/10 @ 633 nm |
Surface quality | 10/5 per MIL-O-13830A |
Parallelism | < 10 arcsec |
Perpendicularity | 10 arcmin |
Clear Aperture | > 90% |
Chamfer | < 0.2 mm @ 45° |
Coating | AR/HR/PR coating |
Property | Value |
---|---|
Chemical Formula | Cr4+:Y3Al5O12 |
Crystal Structure | cubic - la3d |
Lattice Parameter | 12.01 Å |
Mass Density | 4.56 g/cm3 |
Melting Point | 1970°C |
Mohs Hardness | 8.5 |
Young's Modulus | 335 GPa |
Tensile Strength | 2 GPa |
Thermal Conductivity | 0.1213 W/m/K |
Specific Heat | 0.59 J/g/K |
Thermal Shock Resistance Parameter | 800 W/m |
Thermal Expansion | 7.7 - 8.2 × 10-6/°C @ 25°C |
Extinction Ratio | 25 dB |
Refractive Index @1064 nm | 1.83 |
Charge Compensating Ion | Ca2+, Mg2+ |
Property | Value |
---|---|
Optical Density | 0.1 to 0.8 |
Fluorescence Lifetime | 3.4 μs |
Concentrations | 0.5 mol % ~ 3 mol % |
Emission Wavelength | 1350 nm ~ 1600 nm |
Absorption Coefficient | 1.0 cm-1 ~ 7 cm-1 |
Ground State Absorption Cross Section | 4.3×10-18 cm2 |
Emission State Absorption Cross Section | 8.2×10-19 cm2 |
Transmission | 10% to 90% |
Damage Threshold | > 750 MW / cm2 |
Stock specification list
Part Number | Face size | Initial Transmission @1064 nm | Coating |
---|---|---|---|
Cr4-YAG-001 | Ø5 mm | T0=30%~95% | AR/AR@1064 nm |
Cr4-YAG-002 | 3.0*3.0 mm | T0=30%~95% | AR/AR@940+1030 nm |
Cr4-YAG-002 | 5.0*5.0 mm | T0=30%~95% | AR/AR@940+1030 nm |
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