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Nd:YAP is an excellent laser crystal for high-power solid-state lasers. Because it outputs linearly polarized light, it is especially suitable for solid-state lasers with electro-optic boxes or harmonic generators to obtain high-efficiency laser output . The 1.34μm wavelength laser emitted by Nd:YAP crystal has greater advantages in laser medical applications than the 1.32μm wavelength laser emitted by Nd:YAG crystal.
Product Description
Nd:YAP is an excellent laser crystal for high-power solid-state lasers. Because it outputs linearly polarized light, it is especially suitable for solid-state lasers with electro-optic boxes or harmonic generators to obtain high-efficiency laser output . The 1.34μm wavelength laser emitted by Nd:YAP crystal has greater advantages in laser medical applications than the 1.32μm wavelength laser emitted by Nd:YAG crystal.
Main Features
Output linearly polarized laser
1.079μm laser threshold and output efficiency are similar to 1.064μm of Nd:YAG crystal
1.34μm laser output efficiency is higher than 1.32μm of Nd:YAG crystal
The absorption of water and human body fluid tissue to 1.34μm laser is higher than that of 1.32μm
Material Properties
| Crystal structure | Orthorhombic system |
| Lattice constant | a = 0.518 nm, b = 0.532 nm c = 0.736nm |
| Melting point | 1870°C |
| Density | 5.35 g/ cm3 |
| Moh's hardness | 8.5 |
| Specific heat capacity | 400J/(kg K) |
| Coefficient of thermal expansion | a axis: 9.5 x 10 -6 /K , b axis: 4.2 x 10 -6 /K ; c axis: 10.8 x 10 -6 /K |
| Thermal conductivity | 11W/(m·K) |
| Refractive index | na=1.91 , nb=1.92 , nc=1.94 |
| Thermo-optic coefficient | dna/dT=9.7 x 10 -6 /Kdnb/dT=14.5 x 10 -6 /K |
Product Parameters
| Doping concentration | Nd: 0.7~ 0.9 at%@1.079 μm (continuous, pulsed laser), 0.85~0.95at%@1.34μm ( continuous laser) other doping concentrations can be customized |
 Orientation | [010], ±5° |
| Crystal rod size | Diameter: 2~10mm, length: 20~150mm , can be customized |
| Dimensional tolerance | Diameter: +0.00/-0.05mm, Length: ± 0.5mm |
| Cylindrical processing | Grinding and Polishing |
| Parallelism of end faces | ≤10" |
| Perpendicularity between end face and rod axis | ≤5′ |
| Flatness of end face | ≤λ/10 @632.8nm |
| Surface Quality | 10-5 (MIL-O-13830A) |
| Chamfer | 0.15±0.05mm |
| AR Coating Reflectance | ≤0.25% |
| Damage threshold | ≥500MW/ cm2 |
