The Yttrium Orthovanadate(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, interleavers and other polarizing optics, etc.
主要性能参数(Basic Properties of YVO4 crystal)
Crystal Structure | 四方晶系D4h点群 | ||
Growing method | Czochralski method. | ||
Crystal Cell | a=b=7.12 ?, c=6.29 ? | ||
Density | 4.22(g/cm3) | ||
Hardness | 5(mohs), glass-like | ||
Hygroscopic Susceptibility | Non-hygroscopic | ||
Melting Point | |||
Thermal Optical Coefficient | dna/dT=8.5×10-6/k;dnc/dT=3.0×10-6/k | ||
Thermal Expansion Coefficient | aa=4.43x10-6/K ac=11.37x10-6/K | ||
Thermal Conductivity Coefficient | C:0.0523W/cm/K C:0.0510W/cm/K | ||
Main properties include: Transparent Range | 0.45—5μm | ||
(λ:μm) Sellmeier Equation | ne2=3.77834+0.069736/(λ2 -0.04724)-0.0108133λ2 ne2=4.59905+0.110534/(λ2 -0.04813)-0.0122676λ2 | ||
n \ | 0.63μm | 1.30μm | 1.55μm |
no | 1.9929 | 1.9500 | 1.9447 |
ne | 2.22154 | 2.1554 | 2.1486 |
(△n=ne-no) | 0.2225 | 0.2054 | 0.2039 |
(ρ,光轴45°) | 6.04° | 5.72° | 5.69° |
<001>±0.5o | Φ | ||
θ=0/45 o | 2×2× 可按照客户需求,定制特殊方向和尺寸的基片 | ||
光学或抛光成品 | 尺寸公差:±0.05mm,晶向公差:±0.1 o | ||
AR镀膜 | R<0.25% (1550nm) (根据客户要求) | ||
抛光 | 单面或双面 | ||
包装 | 100级洁净袋,1000级超净室 |
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