Yttrium Vanadate（YVO4）は、Czochralski法で成長させた透明な結晶です。
その優れた物性から、光学偏光部品に理想的です。
広い透明度範囲と大きな複屈折を持ち、ファイバーオプティックのアイソレータやサーキュレーター、インタリーバ、ビームディスプレーサーなどの偏光光学部品において、カルサイト（CaCO3）やルチル（TiO2）結晶の優れた合成代替品となります。
Basic Properties
| YVO4 | TiO2 | CaCO3 | LiNbO3 | |
|---|---|---|---|---|
| Thermal Expansion (/℃) | c-axis: 11.4 × 10-6 a-axis: 4.4 × 10-6 |
c-axis: 9.2 × 10-6 a-axis: 7.1 × 10-6 |
c-axis: 26.3 × 10-6 a-axis: 5.4 × 10-6 |
c-axis: 16.7 × 10-6 a-axis: 7 × 10-6 |
| Refractive Index | no: 1.9447 @ 1550 nm ne: 2.1486 @ 1550 nm |
no: 2.454 @ 1530 nm ne: 2.710 @ 1530 nm |
no: 1.6346 @ 1497 nm ne: 1.4774 @ 1497 nm |
no: 2.2151 @ 1440 nm ne: 2.1413 @ 1440 nm |
| Birefringence (ne - no) | 0.2039 @ 1550 nm | 0.256 @ 1530 nm | -0.1572 @ 1497 nm | -0.0738 @ 1440 nm |
| Mohs Hardness | 5 | 6.5 | 3 | 5 |
| Deliquescence | None | None | Weak | None |
| Deliquescence | None | None | Weak | None |
| Transparency Range | 0.4 - 5 µm | 0.4 - 5 µm | 0.35 - 2.3 µm | 0.4 - 5 µm |
A reliable supplier of YVO4 crystal
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- Various size bulk and finished high quality YVO4 crystals up to φ35 × 50 mm3 and φ20 × 20 mm3, respectively
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- Quick Delivery
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Basic Properties of YVO4 crystal
| Transparency Range: | High transmittance from 0.4 to 5 µm |
|---|---|
| Crystal Symmetry: | Zircon Tetragonal, space group D4h |
| Crystal Cell: | a = b = 7.12 A; c = 6.29 A |
| Density: | 4.22 g/cm3 |
| Mohs Hardness: | 5, glass-like |
| Hygroscopic Susceptibility: | Non-hygroscopic |
| Thermal Expansion Coefficiet: | αa = 4.43 × 10-6/K; αc = 11.37 × 10-6/K |
| Thermal Conductivity Coefficient: | //C:5.23 W/m/K; ⊥C:5.10 W/m/K |
| Crystal Class: | Positive uniaxial with no = na = nb, ne = nc |
| Thermal Optical Coefficient: | dna/dT = 8.5 × 10-6/K; dnc/dT = 3.0 × 10-6/K |
| Refractive Indices, Birefringence (△n = ne - no) and Walk-off Angle at 45°(ρ): |
no = 1.9929, ne = 2.2154, △n = 0.2225, ρ = 6.04° at 630 nm no = 1.9500, ne = 2.1554, △n = 0.2054, ρ = 5.72° at 1300 nm no = 1.9447, ne = 2.1486, △n = 0.2039, ρ = 5.69° at 1550 nm |
| Sellmeier Equation (λ in µm): |
no2 = 3.77834 + 0.069736 / (λ2 - 0.04724) - 0.0108133λ2 ne2 = 4.59905 + 0.110534 / (λ2 - 0.04813) - 0.0122676λ2 |