Basic Performance for YVO4 Crystals
Transmission Range: |
0.4-5.0µm | |||
Crystal Cell: | a = b = 7.12A , c = 6.29A | |||
Density: |
4.22g/cm3 | |||
Mohs Hardness | 5 , like glass | |||
Thermal Expansion Coefficient: |
aa = 4.43×10-6/K
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aa = 11.37×10-6/K
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Thermal Conductivity Coefficient: |
up C: 5.23W/m/K
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°C C:5.10W/m/K
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Thermal Optical Coefficient: |
dna/dT = 8.5×10-6/K
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dnc/dT = 3.0×10-6/K
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Refractive Index, Birefringence Walk-Off Angle @ 45°(ρ) |
no = 1.9929
no = 1.9500 no = 1.9447 |
ne = 2.2154
ne = 2.1554 ne = 2.2486 |
ρ = 6.04° @ 0.63µm
ρ = 5.72° @ 1.31µm ρ = 5.69° @ 1.55µm |
Sellmeir Equations for Pure YVO4 Crystal:
no2 = 3.77834 + 0.069736 / (λ2 – 0.04724) – 0.0108133λ2
ne2 = 4.59905 + 0.110534 / (λ2 – 0.04813) – 0.0122676λ2
Curve for YVO4 and LN, Calcite and a-BBO
Comparision with Other Birefringent Crystals
Sinoceramics provides crystal wedges based on a crystal’s birefringent property to control and isolate the back light transmission in fiber. As shown in the figure below, two birefringent wedges are used together with a YIG rotator to construct the core of a fiber optic isolator.
Sinoceramics manufactures (currently mass produces) birefringent wedges for optical fiber communication with. High isolation and low insertion loss can help our customer to produce high quality isolators.