LiNbO3 crystals are widely used as frequency doubling for wavelengths >1μm and optical parametric oscillators (OPOs) pumped at 1064 nm as well as quasi-phase-matched (QPM) devices. Due to their large Electro-Optic(E-O) and Acousto-Optic (A-O) coefficients.
LiNbO3 crystals are the most commonly used material for pockel cells, Q-switches and phase modulators, waveguide substrates, surface acoustic wave (SAW) wafers, etc.
Crystal Structure | Trigonal, space group R3c |
Cell Parameters | a=0.515,c=13.863,Z=6 |
Melting Point | 1255 +/-5℃ |
Curie Point | 1140 +/-5℃ |
Mohs Hardness | 5 |
Density | 4.64 g/cm 3 |
Absorption Coefficient | ~ 0.1%/cm @ 1064 nm |
Solubility: | insoluble in H2O |
Relative Dielectric Constant |
εT11/ε0: 85 εT33/ε0:29.5 |
Thermal Expansion Coefficients at 25℃ |
||a, 2.0 x 10 -6/K @ 25℃ ||c, 2.2 x 10 -6/K @ 25℃ |
Thermal Conductivity | 38 W /m /K @ 25℃ |
Transparency Range | 420 - 5200 nm |
Refractive Indices |
n e = 2.146, n o = 2.220 @ 1300 nm n e = 2.156, n o = 2.322 @ 1064 nm n e = 2.203, n o = 2.286 @ 632.8 m |
Optical Homogeneity | ~ 5 x 10 -5 /cm |
Sellmeier Equations( l in m m) |
n o 2 (l ) = 4.9048+0.11768/(l2- 0.04750) - 0.027169l2 n e 2 ( l) = 4.5820+0.099169/( l2 - 0.04443) - 0.021950 l2 |