ANHUI CRYSTRO CRYSTAL MATERIALS Co., Ltd.
ANHUI CRYSTRO CRYSTAL MATERIALS CO., LTD. INNOVATOR FOR MAGNETO OPTICAL CRYSTALS
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1064nm AR Coating Passive Q Switch Cr4+:YAG Laser Crystal
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 a 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 chemical 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 lifetime and good thermal conductivity
Applications
1.Passively Q-switched lasers for laser rangefinders, LIDAR and LIBS systems
2.Laser systems where short pulses are required.
Main Properties:
| Orientation | <100>within5°or<110>within5° |
| Initial absorption coefficient | 0.1~8.5cm@1064nm |
| Initial transmittance | 3%~98% |
| Size | Diameter: 3~20mm, H×W:3×3~20×20mm Upon request of the customer |
| Parallelism | ≤ 20" |
| Perpendicularity | ≤ 15 ′ |
| Flatness | < λ/10 |
| Surface Quality | 20/10 (MIL-O-13830A) |
| Wavelength | 950 nm ~ 1200nm |
| AR Coating Reflectivity | ≤ 0.2% (@1064nm) |
| Damage threshold | ≥ 500MW/cm2 10ns 1Hz at 1064nm |
| Dimensional tolerances | Diameter:±0.05mm, length: ± 0.5mm Chamfer: <0.1 mm @ 45º |
| Chemical Formula | Cr4+: Y3Al5O12 |
| Crystal Structure | Cubic |
| 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 106<100> |
| Thermal Shock Resistance | 790 Wm-1 |
