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YVO4
 
The yttrium orthvanadate (YVO4) is a positive uniaxial crystal grown with Czochralski method.
It has good temperature stability and physical and mechanical properties, wide transparency and large birefringence, so it is also ideal for optical components such as fiber optical isolators and circulators, beam displaces and other polarizing optics, etc.
YVO4 Doped:
yvo4 crystal
 
Specification
Dimension tolerance: (W +/- 0.1 mm) x (H +/- 0.1 mm) xL( 0.05mm)
Transmitting wavefront distortion: l/8 @633nm
Clear aperture: > 90% central area
Flatness: l/8 @633nm
Scratch/Dig code: 10/5 to MIL-O-13830A
Parallelism: better than 10 arc seconds
Perpendicularity: 5 arc minutes
Angle tolerance: Dq < +/-0.5°, Df < +/- 0.5°
AR coating: R< 0.2% at 1550nm
Wedge Angle tolerance: 0.1°(wedges)
Basic Properties:
0.6341 mm
1.30 mm
1.55 mm
   Refractive Indices
no
1. 9929
1.950
1.9447
ne
2.2154
2.1554
2.1486
    Birefringence (Dn = ne - no)
0.2225
0.2054
0.2039
    Walk-off Angle at 45° (r)
6.04°
5.72°
5.69°

The Sellmeier equations ( l in μm ):
oo2=3.77834 + 0.069736/(l 2-0.04724)-0.0108133l 2

ne2=4.59905 + 0.110534/(l 2-0.04813) - 0.0122676l 2

Applications of YVO4 Crystals:
Following drawings are the simple demonstrations of how the YVO4 crystals are used in Fiber Optic Isolator,
Beam Displacers, Circulators and interleaver.