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YVO4

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Yttrium Vanadate(YVO4)  is a positive uniaxial crystal grown with Czochralski method. It has good temperature stability and physical and mechanical properties. It is ideal for optical polarizing components because of its wide transparency range and large birefringence. It is an excellent synthetic substitute for Calcite (CaCO3) and Rutile (TiO2) crystals in many applications including fiber optic isolators and circulators, interleavers, beam displacers and other polarizing optics ( refer to Table 1). 

Table 1.Comparison of basic properties betweenYVO4 and Other Birefringent Crystals.

 

 
YVO4
TiO2
CaCO3
LiNbO3
Thermal Expansion (/) c-axis 11.4x10-6 9.2x10-6 26.3x10-6 16.7x10-6
a-axis 4.4x10-6 7.1x10-6 5.4x10-6 7x10-6
Refractive Index no 1.9447@1550nm 2.454@1530nm 1.6346@1497nm 2.2151@1440nm
ne 2.1486@1550nm 2.710@1530nm 1.4774@1497nm 2.1413@1440nm
Birefringence(ne-no) 0.2039@1550nm 0.256@1530nm -0.1572@1497nm -0.0738@1440nm
Mohs Hardness 5 6.5 3 5
Deliquescence None None Weak None
Transparency range 0.4-5μm 0.4-5μm 0.35-2.3μm 0.4-5μm

[←]Nd:YLF [→]Nd:YVO4
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