Cr4＋:YAG
Cr4+:YAG Crystal is an excellent crystal for passively Q-switching diode pumped or lamp-pumped Nd:YAG, Nd:YLF, Nd:YVO4 or other Nd and Yb doped lasers at wavelength from 0.8 to 1.2 µm. Passive Q-switches or saturable absorbers provide high power laser pulses without electro-optic Q-switches, thereby reducing the package size and eliminating a high voltage power supply. Cr4+:YAG is more robust than dyes or color centers and is the material of choice for 1 µm Nd lasers.
Advantages:
1. High chemica stability and reliability
2. Being easy to be operated
3. High damage threshold (>500MW/cm2)
4. As high power,solid state and compact passive Q-Switch
5. Long life time and good thermal conductivity
Specifications:
| Orientation | <100> within 5° or <110> within 5° |
| Flatness | < λ/10 |
| Parallelism | ≤ 30" |
| Perpendicularity | ≤ 5 ′ |
| Surface Quality | 10/5 (MIL-O-13830A) |
| Wavelength | 950 nm ~ 1100nm |
| Damage threshold | ≥ 500MW/cm2 |
| Initial transmittance | 5%~95% |
| Size | Diameter:3~20mm, H × W:3 × 3~20 × 20mm Upon request of customer |
| Dimensional tolerances | Diameter:±0.05mm, Length: ± 0.5mm Chamfer: <0.1 mm @ 45º |
| AR Coating Reflectivity | ≤ 0.2% (@1064nm) |
Main properties of Cr4+:YAG Crystal:
| Chemical Formula | Cr4+:Y3Al5O12 |
| Crystal Structure | Cubic |
| Mohs Scale of Mineral Hardness | 8.5 |
| Melting Point | 1970 °C |
| Density, g/cm3 | 4.55 |
| Coefficient of Thermal Conductivity @ 25°C, W x cm-1x °K-1 | 0.14 |
| Coefficient of Thermal Expansion | 8.2 x 10-6/ ℃<100> |
| Young's Modulus | 7.7x
|
| Thermal Shock Resistance | 790 Wm-1 |
Note:
When inquring or ordering Cr4+:YAG crystal, Please specify the size, initial transmission and coatings.
For further information, please contact BJP.
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