YVO4

Applications:

   Fiber optical isolators and circulators, beam displacers and other polarizing optics, etc.

Main characteristics:
Transparency Range: high transmittance from 0.4 to 5mm
Crystal Symmetry: Zircon Tetragonal, space group D4h
Crystal Cell: a=b=7.12 Å; c=6.29 Å
Density: 4.22 g/cm3
Mohs Hardness: 5, glass-like
Deliquescence None
Thermal Expansion Coefficient: aa = 4.43 x 10-6/K; a c = 11.37 x 10-6/K
Thermal Conductivity Coefficient : //C: 5.23 W/m/K; ^ C: 5.10 W/m/K
Crystal Class: Positive uniaxial with no=na=nb, ne=nc
Thermal Optical Coefficient: dna/dT = 8.5x10-6/K; dnc/dT = 3.0x10-6/K
Refractive Indices, no = 1.9929, ne = 2.2154, D n = 0.2225, r = 6.04o at 0.63 m m
Birefringence (D n = ne- no) and no = 1.9500, ne = 2.1554, D n = 0.2054, r = 5.72o at 1.30 m m
Walk-off Angle at 45o (r ): no = 1.9447, ne = 2.1486, D n = 0.2039, r = 5.69o at 1.55 m m
Sellmeier Equation (l in m m): no2 = 3.77834 + 0.069736/(?2 - 0.04724) - 0.0108133?2
ne2 = 4.59905 + 0.110534/(?2- 0.04813) - 0.0122676?2
YVO4 Beam Displacer specifications:
Dimension tolerance ?0.05 x ?0.05 x ?0.1mm
Optical axis orientation +/-0.5?/FONT>
Parallelism <15 arc sec
Perpendicularity <10 arc min
Flatness ? /4 @ 632.8 nm
Surface Quality  20-10 Scr-dig
AR-coating R<0.2% @ 1550 nm?40 nm

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