CRYLIGHT 社製 Passive Crystals
Cr4+:YAG Crystal
Features
Passive Q-Switching is preferred for simplicity of manufacturing and operation, low cost and reduced system size and weight. Cr 4+ :YAG (Y3Al5O12) 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 1.2 mm. Because of its chemically stable, durable, UV resistant, good thermal conductivity and high damage threshold (> 500 MW/cm2) and being easy to be operated, it will replace traditional materials, such as, LiF, organic Dye and color centers.
Advantages of Cr 4+ :YAG Crystals
Providing high power laser pulses without electro-optic Q-switches
More robust and stable than dyes or color centers
High damage threshold
More robust and stable than dyes or color centers
High damage threshold
Specifications
Capabilities:
| Cr4+ dopant: | 0.5 mol% ~ 3 mol% |
|---|---|
| Aperture: | 2×2 ~ 14x14mm |
| Length: | 0.1 ~ 12mm |
| Initial Ttransmission | 10% ~ 99% |
Specifications:
| Orientation: | <111> or <100> within 5° |
|---|---|
| Dimensional Tolerance: | +/-0.1mm |
| Flatness: | <λ/8 at 633nm |
| Surface Quality: | 20/10 Scracth/Dig |
| Parallelism: | < 20 arc seconds |
| Perpendicularity: | < 5 arc minutes |
| Wavefront Distortion: | <λ/8 at 633nm |
| Clear Aperture: | Central 90% |
| Chamfer: | 0.15×45° |
| Coating: | * S1,S2: AR@1064nm * S1: HR@1064nm; S2: AR@1064nm |
| Chemical Formula | Cr4+:Y3A15O12 |
|---|---|
| Crystal Structure | Cubic garnet |
| Recovery time | 8.5μs |
| Hardness Mohs | 8.5 |
| Density | 4.56g/cm |
| Orientation | [100]+/-10° |
| Thermal conductivity | 12.13w/m/k |
| Refractive index | 1.82 @ 1064nm |
| Base state absorption cross section | σs1=4.3×10-18cm2 |
|---|---|
| Emission state absorption cross section | σs2=8.2×10-19cm2 |
| Fluorescence lifetime | 3.4us |
*When ordering Cr4+:YAG crystal, please specify the aperture, initial transmission(To) and coatings.