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| ◇ Laser |
| Fiber coupled module |
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| Mini laser |
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| ◇ Optical units |
| Narrow band Bandpass filter |
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| Mirror |
| Wave plate |
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| ◇ Crystals |
| YVO4 |
| LiNbO3 |
| LiTaO3 |
| CaF2 |
| Nd:YVO4 |
| Nd:YAG |
Yttrium orthovanadate (YVO4) is a good birefringent single crystal with excellent physical and optical properties. Due to its wide transparency range, high transmittance, large birefringence and easily processed character, the material can be widely used in optical components such as fiber optical isolators and circulators, beam displacers and other polarizing optics, etc.
| Transparency Range | 0.4 - 5μm high transmission | |
| Crystal Symmetry | Zircon Tetragonal, space group D4h |
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| Crystal Cell | a=b=7.12 Å; c=6.29 Å | |
| Density | 4.22 g/cm3 | |
| Mohs Hardness | 5, glass-like | |
Deliquescence |
None |
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| Thermal Expansion Coefficient | aa = 4.43 x 10-6/K; a c = 11.37 x 10-6/K | |
| Thermal Conductivity Coefficient | //C: 5.23 W/m/K; ⊥C: 5.10 W/m/K | |
| Crystal Class | Positive uniaxial, no=na=nb, ne=nc | |
| Thermal Optical Coefficient | dna/dT = 8.5x10-6/K; dnc/dT = 3.0x10-6/K | |
Refractive Indices, |
no = 1.9929, ne = 2.2154, D n = 0.2225, r = 6.04° (0.63 μ m) | |
| no = 1.9500, ne = 2.1554,D n = 0.2054, r = 5.72° (1.30 μm) | ||
| no = 1.9447, ne = 2.1486, D n = 0.2039, r = 5.69° (1.55 μ m) | ||
Sellmeier Equation (λ is μm) |
no2 = 3.77834 + 0.069736/(λ2 - 0.04724) - 0.0108133λ2 | |
| ne2 = 4.59905 + 0.110534/(λ2- 0.04813) - 0.0122676λ2 |
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