LiTaO3 exhibits excellent electro-optical,
piezoelectric and pyroelectric proerties. It has been widely used
for E-O devices, due to its good optical, NLO and E-O properties,
and higher damage threshold. U-Optics supplies high quality LiTaO3
boules and wafers with the following specifications for standard
applications. It may also offer other specifications upon request.
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Standard Specifications of LiTaO3:
- Typical SAW Properties:
| Cut Type | Vs (m/s) | K2s (%) | TCV (10-6/oC) | TCD (10-6/oC) |
| X-112o Y | 3295 | 0.75 | -16.50 | 22.3 |
| Y-Z | 3230 | 0.66 | - | 35 |
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Specification of Boules:
Typical Diameter |
Diameter 3.0" ¡À 2mm | Diameter 4.0" ¡À 2mm |
Typical Length |
¡Ü 120mm | ¡Ü 100mm |
Cut Type |
36¡ã Y, 42¡ã Y | |
Main Parameters:
Transparency Range: |
400 - 5000nm |
Crystal Structure: |
Trigonal, Space group R3c,
Point group 3m |
Cell Parameters: |
a = 0.5154nm, c = 1.3783nm |
Mohs hardness: |
5.5 mohs |
Melting Point: |
1650 |
Curie Temperature: |
607 |
Density: |
7.46 g/cm3 |
Dielectric Constant: |
¦Î11/¦Î0 = 51.7, ¦Î33/¦Î0 = 44.5 |
Elastic Stiffness Coefficient: |
CE11 = 2.33(x 1011 N/m2) / CE33 = 2.77(x 1011 N/m2) |
Piezoelectric Strain Constant: |
d22 = 2.4 (x 10-11 C/N) / d33 = 0.8 (x 10-11 C/N) |
Electro-optical coefficients: |
r33 = 30.4pm/V |
Refractive index at 632.8nm: |
no = 2.176, ne
= 2.180 |