| Material | V3+:YAG Crystals | Orientation | <100> <+/-0.5° |
| Optical Density | 0.1-0.8 | Absorption Coefficient | 1.0cm-1 - 7.0cm-1 |
| Transmittance | 30%-97% | Absorption Cross Section | 2.8x10-18cm2(at 1.34µm) |
| Thickness/Diameter Tolerance | +/-0.1mm | Parallelism | 10″ |
| Perpendicular | 5′ | Surface Quality | 10/5 S/D |
| Wavefront Distortion | Lambda/8 @ 632nm | Flatness | Lambda/8 @ 632nm |
| Aperture | >90% | Chamfer | <0.2 x 45° |
| HR Coating | <= 0.2% (@ 1340nm) | Damage Threshold | >500MW/cm2 |
V3+:YAG crystals are a novel material for saturable absorber passive Q-switching in lasers emitting from 1.06 to 1.44 µm, in particular, for 1.3 µm Nd-lasers. Excellent ground state absorption (GSA) cross section of 7x10-18 cm2 near 1.3μm and negligible excited state absorption (ESA) permits Q-switching of 1.3μm and 1.44μm Nd-lasers without intracavity focusing both with flash-lamp and diode-laser pumping. V:YAG has good chemical stability and thermal conductivity, it is UV resistant and has a high damage threshold.
Shanghai North Optics offers high-quality V3+:YAG with laser-grade polishing and coatings.
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