YVO4 Crystal

Crystals >>> Birefrigent Crystals >>> YVO4 Crystal

YVO4(Yttrium orthovanadate) is a positive uniaxial crystal grown with Czochralski method.  It has a wide transparency range and larger birefringence, which make it widely used in many applications in particular fiber optics field.  YVO4 is an excellent synthetic substitute for calcite and rutile crystal.

Red Optronics supplies a wide variety of finished YVO4 crystals.  Our standard specifications for YVO4 follows:

Main Specifications  
Diameter max. 25mm
Length max. 30mm
Surface quality 20/10 scratch/dig
Beam deviation <3 arc min
Optical axis orientation +/-0.5
Flatness λ/4 @632.8nm
Transmission wavefront distortion <λ/2 @632.8nm
Coating upon customer's request

Notes:
To inquire or order YVO4  birefringent crystals, please provide specifications as detailed in above.

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/cm2
Hygroscopic susceptibility Non-hygroscopic
Mohs hardness 5 glass like
Thermal optical coefficient Dna/dT=8.5x10-6/K; dnc/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(Dn=ne-no) and walk-off angle at 45 deg(ρ) No=1.9929, ne=2.2154, Dn=0.2225, ρ=6.04, at 630nm
No=1.9500, ne=2.1554, Dn=0.2054, ρ=5.72, at 1300nm
No=1.9447, ne=2.1486, Dn=0.2039, ρ=5.69, at 1550nm
Sellmeier equation (λ in μm) no2=3.77834+0.069736/(λ2-0.04724)-0.0108133λ2 ne2=24.5905+0.110534/(λ2-0.04813)-0.0122676λ2

 

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