MSE PRO YVO₄ Undoped Yttrium Orthovanadate Crystal

Undoped YVO₄ is an excellent newly developed birefringence optical crystal.

• It has very good transmission in a wide wavelength range from visible to infrared.
• It has high refractive index and birefringence difference.
• Compared with other important birefringence crystals, YVO₄ has higher. hardness, better fabrication property, and water insolubility than calcite (CaCO₃ single crystal).
• Easier to make large, high quality crystal at lower cost than Rutile (TiO₂ single crystal).

Those outstanding properties make YVO₄ very important birefringence optical material and widely used in opto-electronic research, development and industry. For example, the optical communication system needs a large quantity devices of undoped YVO4, such as fiber optical isolators, circulators, beam displacers, Glan polarizers and other polarizing devices.

YVO₄ crystal properties

Crystal structure: Tetragonal

Crystal orientation: (001), (100), (110), (101)

Density: 4.24 g/cm3
Melting point: 1810 – 1940 deg C
Mohs hardness: glass-like, ~5
Knoop hardness: 480 kg/mm2
Thermal expansion coefficient:

• along a axis = 4.43×10^−6 /K
• along c axis = 11.37×10^−6 /K

Thermal conductivity coefficient:

• parallel to c-axis: 5.23 W/m.K
• perpendicular to c-axis: 5.10 W/m.K

Refractive indices, birefringence ( Δn = ne - no) and walk-off angle at 45° (ρ):

• at 0.63 µm:
• ne = 2.2154
• no = 1.9929
• Δn = 0.2225
• ρ = 6.04
• at 1.30 µm:
• ne = 2.1554
• no = 1.9500
• Δn = 0.2054
• ρ= 5.72
• at 1.55 µm:
• ne = 2.1486
• no = 1.9447
• Δn = 0.2039
• ρ = 5.69

Sellmeier equation (λ in µm):
ne2=4.59905 + 0.110534/(λ2 − 0.04813) − 0.012267612 λ2
no2=3.77834 + 0.069736/(λ2 − 0.04724) − 0.0108133 λ2

Sizes available: 10 mm x 10 mm x 0.5 mm
customized sizes and orientations are available upon request

Surface roughness (Ra): <= 0.5nm

Surface Polishing: Single or double side polished