Pure Yttrium Vanadate (YVO4) crystal is a positive uniaxial crystal with a wide transparency range in infrared, a large birefringence, and excellent mechanical properties. It has been extensively used in fabricating birefringent plates, polarizers, isolators, circulators, and beam displacers.
On this page are birefringent YVO4 plates or blocks. For polarizing optics manufactured from YVO4 crystal, please go to Polarizing Optics.
YVO4 crystal wedges/prisms are also available. Please check the "Tech Info" tab below for more information.
|Part No.||Aperture||Thickness||Orientation||Coating||Price||Availability||Add to Cart|
Basic Properties of YVO4 Crystals:
|Transparency Range: 400 - 4000 nm||
|Crystal Symmetry: Zircon Tetragonal, D4h (4/mmm)|
Lattice Constants: a=b=7.12Å; c=6.29 Å
|Density: 4.22 g/cm3|
dno/dT= 8.5 x 10-6 /oC
dne/dT= 3.0 x 10-6/oC
|Damage Threshold (10 ns, 10 Hz)
at 1064 nm 100 MW/cm2
at 532 nm 50 MW/cm2
|Optical Homogeneity: Δn < 10-6/cm|
|Mohs Hardness: 5|
|Thermal Expansion Coefficients||αa = 4.4 x 10-6/K
αc = 11.4 x 10-6/K
|Linear Absorption Coefficient: α<0.01 cm-1 from 400 to 5000 nm|
Sellmeier Equation (λ in µm):
Specifications of Pure YVO4 Components:
|Dimension Tolerance:||±0.1 mm|
|Wedge Angle Tolerance:||0.1°|
|Surface Quality:||20/10 Scratch and Dig|
|Optical Axis Orientation:||+/-0.5°|
|Parallelism:||< 30 arc sec|
|Perpendicularity:||< 10 arc min|
|Flatness:||λ/6 @ 632.8 nm|
|Transmission Wavefront Distortion:||< λ/4 @ 632.8 nm|
|AR-coating:||R < 0.25%, available upon request|
Common cut orientations:
YVO4 crystals with a wedge angle (α) can be custom fabricated with the specified orientation of the optical axis. A paired or such prisms with the optical axes orthogonal to each other can be used to continuously adjust the phase shift or time delay between two orthogonally polarized pulses.
YVO4 crystals are uncoated unless the coating is specified. Anti-reflection coatings (AR coatings) with R < 0.25% at the specified wavelengths are available upon request.
For customer convenience and protection of crystals, crystals can be pre-mounted in a 1" (25.4 mm) anodized aluminum holder. A standard 1" mirror mount may be conveniently used to tune the crystals for optimized birefringence or time delay. A rotation stage may be further used if a larger angular change is needed.
0.5" (12.7 mm) holders for smaller crystals are available upon request.
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