Lithium niobate crystals
Main features
- Broad transparency region from 420 nm to 5200 nm
- High nonlinear, electro-optic and acousto-optic coefficients
- Nonhygroscopic, mechanically, and chemically stable
Application examples
- Electro-optic modulation and Q-switching
- Optical parametric oscillators (OPO) pumped at 1064 nm
- Quasi-phase-matched devices with periodically poled lithium niobate (PPLN)
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- Description
- Properties
Lithium niobate (LiNbO3, LN) is a multi-purpose material in photonics and optoelectronics fields. It features a wide transparency range from 420 nm to 5,2 µm, excellent nonlinear, electro-optic, and piezoelectric properties. Most common applications include infrared range optical modulation and Q-switching, nonlinear frequency conversion of >1 µm wavelengths. Their electrical and optical properties can be adjusted using magnesium or zirconium dopants.
Physical and optical properties | |
---|---|
Chemical formula | LiNbO3 |
Crystal structure | Trigonal, 3m |
Optical symmetry | Negative uniaxial (no > ne) |
Density | 4,64 g/cm3 |
Mohs hardness | 5 |
Transparency range | 420 nm - 5,2 μm |
Sellmeier equations (λ in µm) | no2 = 4,9048 + 0,11768/(λ2 - 0,04750) - 0,027169 λ2; ne2 = 4,5820 + 0,099169/(λ2 - 0,04443) - 0,021950 λ2 |
Refractive indices | no = 2,220; ne = 2,146 @1064 nm |
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