Lithium Tantalate (LiTaO3), possess a combi-nation of unique electro-optical, pyroelectric, piezoelectric properties and good mechanical &chemical stability , which as a material finds uses in pyroelectric ,electro-optical, piezoelectric, acousto-optical applications. LiTaO3 well-suited for numerous applications including electro-opti-cal modulators, pyroelectric detectors, optical waveguide,SAW(surface acoustic wave) sub-strates, IDT(interdigital transducer) , bulk acoustic wave devices ,piezoelectric transducers etc. With a Curie temperature of 620°C, it can operate at very high ambient temperatures and is an excel-lent infrared detector material.
Both lithium niobate and lithium tantalate can be grown with different properties for differing applica-tions, research projects and production methods. For example wafers free of pyroelectric discharge, 4″ (100mm), orientation 36°or 42°.
Type Cut | X, Z, 36°Y, 42°Y, 163°Y |
Type Size(mm) | ≤4” |
Type Thickness(mm) | 0.2~1.0 |
Type Length(mm) | ≤150 |
Orientation Tolerance | < 0.5° |
Parallelism | <20〞 |
Perpendicularity | 5ˊ |
Surface Quality | 10-5 (MIL-O-13830A) |
Wavefront Distortion | <λ/4@633 nm |
Surface Flatness | <λ/8 @633 nm |
Clear Aperture | >90% |
Thickness/Diameter Tolerance | ±0.05 mm |
Wide transparency range
High optical damage threshold
Stable chemical and physical properties
SAW device
Electro-optical modulators
Motion detectors
Cut type | 36 °rotated y-cut | 163°rotated y-cut | X-cut | Z-cut |
Vibration mode | Quasi-extension | Quasi-shear | Shear | Extension |
Resonance Frequency Constant (MHz-mm) | 1.906 | 3.04 |
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