LiNbO3
Keywords:
LiNbO3
Category:
- Details
- Characteristics
- Parameters
- Application
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- Commodity name: LiNbO3
Lithium niobate is an excellent piezoelectric transducer material, ferroelectric crystal, and photoelectric material; as an electro-optic material, it plays a role in optical modulation in optical communication and is widely used in parametric oscillators, frequency doublers, acousto-optic devices, and optical modulators. Polarized lithium niobate crystals have good piezoelectric, ferroelectric, photoelectric, nonlinear optical, and thermoelectric properties, and also exhibit a photorefractive effect.
Lithium niobate is an excellent piezoelectric transducer material, ferroelectric crystal, and photoelectric material; as an electro-optic material, it plays a role in optical modulation in optical communication and is widely used in parametric oscillators, frequency doublers, acousto-optic devices, and optical modulators.
Main Features ：
Curie temperature 1140±5℃
High modulation bandwidth
Stable physicochemical properties
Typical applications:
Surface acoustic wave filters, isolators, narrowband filters, sensors, photonic tunable filters, acousto-optic devices, optical gyroscopes, optical waveguide switches, optical modulation directional couplers, optical communication modulators, interferometers, circulators, high-speed long-distance communication devices, and frequency doubler devices, etc.
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Crystal structure
Trigonal system
Lattice parameters
a=0.515Å, c=13.863Å, Z=6Å
Density
4.65g/cm3
Melting point
1250±5℃
Curie temperature
1140±5℃
Mohs hardness
5
Relative dielectric constant
ε 11 =85.2
ε 33 =28.7
Thermal expansion coefficient
α 11 =15.4×10 -6 /K
α 33 =7.5×10- 6/K
Refractive index
no=2.286, ne=2.203 @633nm
Pyroelectric coefficient
4×10 -5 C/cm2 /K
Piezoelectric constant
d 22 =2.04×10 -11 C/N,d 33 =0.6×10 -11 C/N
d 15 =7×10 -11 C/N,d 31 =0.1×10 -11 C/N Refractive index
n o =2.2827, n e =2.1928 @633nm
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Electro-optic coefficient gT33=32pm/V，gS33=31pm/V
gT31=10pm/V，gS31=8.6pm/V
gT22=6.8pm/V，gS22=3.4pm/V
Dielectric constant
ε 11 /ε 0 =85;ε 33 /ε 0 =29.5
Thermal conductivity
38W/m/K@25℃
Transmittance range
370~5000nm
Refractive index
no=2.286 ne=2.203@633nm
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