YVO₄(Yttrium Vanadate) is a positive uniaxial crystal that has good mechanical and physical properties, it is ideal for optical polarizing components. Because of its wide transparency range and large birefringence, YVO₄is a better substitute for Calcite or TiO₂crystals in some applications like beam displacers, Glan polarizers and other polarizing components.

Refractive Indices, Birefringence (Δn=n_e-n_o)& Walk-off Angle @ 45^º(ρ):
@ 633nm n_o=1.99290, n_e=2.2154, Δn=0.2225, ρ=6.04^º

@ 1300nm n_o=1.9500, n_e=2.1554, Δn=0.2054, ρ=5.72^º

@ 1550nm n_o=1.9447, n_e=2.1486, Δn=0.2039, ρ=5.69^º

Sellmeier Equation(λ in μm):
n_o²= 3.77834 + 0.069736/(λ²-0.04724)-0.0108133λ²
n_e²= 4.59905 + 0.110534/(λ²-0.04813)-0.0122676λ²

 

Features and Standard specifications from LNG Optics:

Orientation accuracy: ± 0.5°

Dimension tolerance: ± 0.1mm

Surface Quality: 10/5 S/D

Flatness: λ/8 @ 632.8nm

Parallelism: 30 arc seconds

Wedged angles accuracy: 3 arc minutes

Perpendicularity: 5 arc minutes

AR Coatings: single band, broadband