LiTaO3 is also a widely used E-O crystal, due to its optical, NLO and E-O properties similar to those of LiNbO3, but with a higher damage threshold.
Crystal Structure: |
Trigonal , Space group R 3c , Point group 3m
|
|
Cell Parameters: |
a = 5.154Å , c = 13.781Å
|
|
Melting Point: |
1650°C
|
|
Curie Temperature:
|
607°C
|
|
Mohs Hardness:
|
5.5
|
|
Density:
|
7.46g/cm3
|
|
Dielectric Constant:
|
ε11/εo 51.7 |
ε33/εo 44.5
|
Elastic Stiffness Coefficient:
|
CE11 2.33 (x1011 N/m2) |
CE33 2.77 (x1011 N/m2)
|
Piezoelectric Strain Constant:
|
D22 2.4 (x10-11C/N)
|
D33 0.8 (x10-11C/N)
|
Transmission Range:
|
400 – 4500nm
|
|
Electro-Optical Coefficients:
|
R33 = 30.4 pm/V
|
|
Refractive Index @ 632.8nm:
|
no = 2.176
|
ne = 2.180
|