The yttrium orthvanadate (YVO4) is a positive uniaxial crystal grown with Czochralski method.
The yttrium orthvanadate (YVO4) is a positive uniaxial crystal grown with Czochralski method. It has good temperature stability and physical and mechanical properties, wide transparency and large birefringence, so it is also ideal for optical components such as fiber optical isolators and circulators, beam displaces and other polarizing optics, etc. Sellmeier Equation (l in mm): no2=3.77834 + 0.069736/(l2 - 0.04724) - 0.0108133l2 ne2=4.59905 + 0.110534/(l2 - 0.04813) - 0.0122676l2
| | 0.6341 mm | 1.30 mm | 1.55 mm |
| Refractive Indices: | no | 1. 9929 | 1.950 | 1.9447 |
| ne | 2.2154 | 2.1554 | 2.1486 |
| Birefringence (Dn = ne - no) | 0.2225, | 0.2054 | 0.2039 |
| Walk-off Angle at 45º (r) | 6.04º at | 5.72º | 5.69º |
Applications of YVO4 Crystals:Fiber Optic Isolator (YVO4 Wedges)Beam Displacers,CirculatorsInterleaverSpecifications:
| Dimension tolerance | (W ± 0.1 mm) x (H ± 0.1 mm) xL( 0.05mm) |
| Wavefront distortion: | l/8 @ 633 nm |
| Clear aperture: | > 90% central area |
| Flatness: | l/8 @ 633 nm |
| Scratch/Dig code: | 10/5 to MIL-O-13830A |
| Parallelism: | better than 10 arc seconds |
| Perpendicularity: | 5 arc minutes |
| Angle tolerance: | Dq < ±0.5°, Df < ± 0.5° |
| AR coating: | R< 0.2% at 1550nm |
| Wedge Angle tolerance: | 0.1°(wedges) |
YVO4 birefringence crystal
