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YVO4 is a excellent birefengent crystal for fiber optics applications.
As substrate, it can replace TiO2 for lower cost and better quality in many cases
Crystal |
Birefr- ingence D = he-ho |
Refractive index h at l = 0.63m |
Thermooptical Coef. dh/dT 106/K |
Structure lattice constant (A) |
Melting point oC |
Density g/cm3 |
Hard-ness (Moh) |
Thermal Coef. 10-6/K |
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YVO4 |
+ 0.222 |
ho = 1.9929 he = 2.2154 |
a : -8.5 c : -3.0 |
Tetragonal a = 7.12 c = 6.29 |
1825 |
4.22 |
5 |
a : 4.46 c : 11.37 |
TiO2 |
+ 0.282 |
ho = 2.583 he = 2.865 |
a : -0.72 c : -0.42 |
Tetragonal a = 4.593 c = 2.958 |
1840 |
4.26 |
7 |
a : 7.14 c : 9.19 |
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