Nd YAP laser crystal for high-power operation at the 1300nm and 2940nm laser
The chemical formula of Nd: YAP is Nd3+: YAlO3, and the structure is distorted perovskite, belonging to oblique hexagonal crystal system, and spatial group is Pbnm, whose axes a, b and c are perpendicular to each other, belongs to negative uniaxial crystals and is anisotropic. Among the numerous neodymium-doped laser crystals, Nd: YAP crystal not only has high thermal conductivity, but also has a larger excited emission cross section at 4F3/2–4 I13/2 transition. They are one of the most effective laser crystals known at present for the high-power operation at the 1.3 mm, the crystal is mainly pumped by LD. 1.3 mm lasers are widely used in the field of medicine, optical fiber communication and military. What’ s more, water molecule has good absorption at this laser band. Which makes it have a very good hemostatic ability, and widely used in laser therapy, such as hemostasis, neurosurgery, resection of pathological tissues and wrinkle removal. In addition, Nd: YAP crystal has natural birefringence characteristics, which is very beneficial to overcome the thermal depolarization and nonlinear frequency transformation of laser.
- Type Of Crystal: Other
- Crystal Diameter: 4~12 mm
- Crystal Length: 5~30 mm
- AR Coating: One side, Both sides, Uncoated
- Materials: Nd: YAP
- Orientation: <5°
- Parallelism: ≤10″
- Perpendicularity: ≤5′
- Surface Quality: 10-5 (MIL-O-13830A)
- Wavefront Distortion: λ/8 @ 633nm
- Surface Flatness: ≤ λ/10 @632.8nm
- Clear Aperture: >95 %
- Length Tolerance: +0.5/-0mm
- Thickness/Diameter Tolerance : ±0.05 mm
- Damage Threshold: ≥500MW/cm2
High thermal conductivity
Large excited emission cross section
High laser gain
Low laser threshold
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