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Item: YAG-001
Item: YAG-001
Product Name: Passive Q-switch material
Full name of the item is Passive Q-switch material(Cr4+:YAG).
Cr4+:YAG is an excellent passive Q-switch or saturable absorber crystal of choice for 1μm Nd lasers.
Advantages of Cr4+:YAG Crystals
Providing high power laser pulses without electro-optic Q-switches
More robust and stable than dyes or color centers
High damage threshold
Material and specifications
| Orientation | [100] or [111] within 5° |
| Initial absoption coefficience: | 0.5~6cm-1 @1064nm |
| Initial transmission | 5%~95%@1064nm |
| Sizes | Diameter:3~12mm H×W:3×3~12×12mm |
| Dimensional tolerances | Diameter+0.000"/-0.002",H&W±0.002" |
| Barrel finish | Ground Finish400# Grit |
| Parallelism | ≤30" |
| Flatness | λ/10 |
| Surface quality | 20-10(MIL-O-13830A) |
| Damage threshold | ≥500MW/cm2 |
| AR coating reflectivity | ≤0.25% (@1064nm) |
Physical and Chemical Properties
| Crystal Structure | Cubic |
| Lattice Parameters | 12.01 Å |
| Melting Point | 1970oC |
| Moh Hardness | 8.5 |
| Density | 4.56±0.04g/cm3 |
| Specific Heat (0-20) | 0.59J/g.cm3 |
| Modulus of Elasticity | 310GPa |
| Young's Modulus | 3.17×104Kg/mm2 |
| (est.)Poisson Ratio | 0.3(est.) |
| Tensile Strength | 0.13~0.26GPa |
| Thermal Expansion Coefficient | [100]Direction:8.2×10-6/oC(0~250oC) |
| [110]Direction:7.7×10-6/oC(0~250oC) | |
| [111]Direction:7.8×10-6/oC(0~250oC) | |
| Thermal Conductivity | 14W/m/K(@20oC) |
| 10.5W/m/K(@100oC) | |
| Thermal Optical Coefficient (dn/dT) | 7.3×10-6/oC |
| Thermal Shock Resistance | 790W/m |
| Solubility | Water: Insoluble; Common Acids: Slightly |