Yttrium Orthovanadate Crystals – YVO4
Yttrium Orthovanadate is suited for optical polarising components because of its wide transparency range and large birefringence. It is a substitute for Calcite (CaCO3) and Rutile (TiO2) crystals.
Applications
- Fiber – Optic Isolators
- YVO4 Beam Displacer
- Circulators and Glan Polarisers
Main Properties
Thermal Optical Coefficientdna / dT = 8.5 x 10-6 / K
| Transparency Range | High transmittance from 0.4 to 5 |Ìm |
| Symmetry | D4h |
| Lattice Parameters | a = b = 7.12 Å; c = 6.29 Å |
| Density | 4.22 g / cm3 |
| Hygroscopic Susceptibility | Non – hygroscopic |
| Thermal Expansion Coefficient | |Áa = 4.43 x 10-6 / K; |Ác = 11.37 x 10-6 / K |
| Thermal Expansion Coefficient | //C : 5.23 W / m / K; ¡ ÌC : 5.1 W / m / K |
| Crystal Class | Positive unaxial with no = na = nb , ne = nc |
| Refractive Indices, Birefringence | no = 1.9929, ne = 2.2154, ¡÷n = 0.2225, at 0.63|Ìm |
| (¡÷n = ne – no) | no = 1.9500, ne = 2.1554, ¡÷n = 0.2054, at 1.30|Ìm |
| no = 1.9447, ne = 2.1486, ¡÷n = 0.2039, at 1.55|Ìm | |
| Sellmeier Equation (|Ë in |Ìm) | no2 = 3.7783 + 0.0697 / (|Ë2 – 0.0472) – 0.0108|Ë2 |
| nc2 = 4.5991+ 0.1105 / (|Ë2 – 0.0481) – 0.0123|Ë2 | |
| Thermal Optical Coefficient | dna / dT = 8.5 x 10-6 / K |
| dnc / dT = 3.0 x 10-6 / K |
Availability
- Sizes of boule crystal: |µ20¡ x 25 mm X 20¡ x 30mm
- Sizes of crystal devices: available according to the requirement of the user
Specification
| Product | Specification |
|---|---|
| 1% Niobate : Yttrium Vanadate; a – cut; 3.0 x 3.0 x 1.0 mm | S1 : AR 1064 nm (R < 0.1% HT 808nm (R< 5%) |
| S2 : AR 1064 nm (R < 0.1%) | |
| KTP cut for type ll; θ= 90°, φ = 23.5°; 3.0 x 3.0 x 4.5 mm | S1 : HR 1064 nm (R > 99.8%) HT 532 nm (R < 5%) |
| S2 : AR 1064 nm (R < 0.1%) HT 532 nm (R < 0.5%) | |
| Yttrium Vanadate Boule : c – axis; | 140 g |
| Yttrium Vanadate Wafers | 50 x 1.5 mm |
