LiTaO3 Crystals

LiTaO₃ is a crystal material with excellent electro-optic, piezoelectric, and nonlinear optical, and is often used in optical communication, electro-optic modulators, lasers, and surface acoustic wave devices.

Main advantages: Strong electro-optic effect, High piezoelectric coefficient, Good thermal stability, Wide transmission range

Application field: Optical Communication, Precision Sensing, Aser Technology, Medical Devices, Acoustic Surface Wave

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LiTaO₃ crystal is an electrooptic, nonlinear optical, and piezoelectric material with a trigonal crystal structure. It possesses thermal stability and wide-band light transmission, with high transmittance in the range from ultraviolet to mid-infrared. The electrooptic effect, dielectric constant and mechanical properties of LiTaO₃ crystal are all excellent, making it widely used in optical communication, precision sensing, and laser technology.

Main advantages:

  • Strong electro-optic effect: Suitable for high-speed optical modulation.
  • High piezoelectric coefficient: Beneficial for surface acoustic wave and ultrasonic applications.
  • Good thermal stability: Suitable for high-temperature environments.
  • Wide transmission range: Good transmittance from UV to mid-infrared.

Application field:

  1. Optical Communication: Used for electro-optic modulators and optical switches.
  2.  Precision Sensing: Applied in accelerometers, temperature sensors, etc.
  3. Aser Technology: Used for laser doublers, modulators, etc.
  4. Medical Devices: Used in piezoelectric sensors in ultrasound devices.
  5. Acoustic Surface Wave: Such as wireless filters and delay lines.

Basic parameters:

Parameter Numerical value
Crystal structure Trigonal crystal system
Chemical formula LiTaO₃
Density 7.46 g/cm³
Refractive index nₒ = 2.180, nₑ = 2.200（632.8 nm）
Refractive birefringence ~0.020
Transparency range 0.3 – 5 μm
Electrooptic coefficient r33 ≈ 30.4 pm/V
Curie temperature 605°C
Surface acoustic wave velocity ~3488 m/s
Piezoelectric coefficient d33 ≈ 16 pC/N

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