Undoped YVO 4 crystal is widely used in many beam displace online_orderings because of its large birefringence. It also has good physical and favorable mechnical properties than thers birefringent crystals, which make YVO 4 well suited for compact fiber optical components, such as isolators, circulators and interleaver etc.

 Capabileties:

1) Diameter : max. 25mm
 
2) Length: max. 30mm
3) Surface Quality: better than 2 0/10 scratch/dig Per MIL-0-13830A
4) Beam Deviation: <3 arc min
5) Optical Axis Orientation: +/-0.2°
6) Flatness: < l /4 @633nm
7) Transimission Wavfront Distortion: <l /2 @633nm
8) Coating: upon customer's Specification

 

 Physical and Optical Properties
Transparency Range 400~5000nm
Crystal Symmetry Zircon tetragonal, space group D4h
Crystal Cell A=b=7.12 °, c=6.29 °
Density 4.22 g/cm 2
Hygroscopic Susceptibility Non-hygroscopic
Mohs Hardness 5 glass like
Thermal Optical Coefficient dn a /dT=8.5x10 -6 /K; dn c /dT=3.0x10 -6 /K
Thermal Conductivity Coefficient ||C: 5.23 w/m/k; ⊥C:5.10w/m/k
Crystal Class Positive uniaxial with no=na=nb, ne=nc
Refractive Indices, Birefringence( D n=ne-no) and Walk-Off Angle at 45 deg(ρ) No=1.9929, ne=2.2154, D n=0.2225, ρ=6.04°, at 630nm 
No=1.9500, ne=2.1554, D n=0.2054, ρ=5.72°, at 1300nm 
No=1.9447, ne=2.1486, D n=0.2039, ρ=5.69°, at 1550nm
Sellmeier Equation (λ in μm)
o 2 =3.77834+0.069736/(l2 -0.04724)-0.0108133l2
n e 2 =4.5909+0.110534/(l2 -0.04813)-0.0122676 l2

 

 

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