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Pure YVO4 Crystals

Pure YVO4 Crystals
Pure YVO4 Crystals Pure YVO4 Crystals Pure YVO4 Crystals

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 widely used in fabricating birefringent plates, polarizers, isolators, circulators, and beam displacers.

In 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.

Please use "Add to Cart" to place the interesting products in the shopping cart. Check out with online payment or ask us for the prices/availability via the shopping cart. Filters below or the form at the bottom can be used to assist product search or make further inquiries.
Aperture:
Thickness:
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Coating:
Part No. Aperture Thickness Orientation Coating Price Availability Add to Cart


Basic Properties of YVO4 Crystals:
 

Transparency Range: 400 - 4000 nm

material-yvo.GIF (11376 bytes)

Transmission Curve

Crystal Symmetry: Zircon Tetragonal, D4h

Lattice Constants: a=b=7.12Å; c=6.29 Å

Density: 4.22 g/cm3
Thermo-Optic Coefficients:
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):
no2=3.77834 + 0.069736/(λ2 - 0.04724) - 0.0108133λ2
ne2=4.59905 + 0.110534/(λ2 - 0.04813) - 0.0122676λ2

 Wavelength (nm) no ne Birefringence
(Δn=ne-no)
Walk-off Angle
 at 45°
1550 1.9447 2.1486 0.204 -5.67°
1300 1.9500 2.1554 0.205 -5.70°
1064 1.9571 2.1650 0.208 -5.74°
800 1.9721 2.1859 0.214 -5.86°
632.8 1.9929 2.2154 0.223 -6.02°
532 2.0177 2.2508 0.233 -6.22°

 

 


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:



Prisms:

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.  




Coatings:

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. 


Mount:

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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