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LiNbO3 Switch

Due to its unique electro-optical, photoelastic, piezoelectric and non-linear properties ,Lithium Niobate is widely used in a variety of integrated and active acousto-optical devices. Its versatility is made possible by the excellent electro-optic, nonlinear, and piezoelectric properties of the intrinsic material. It is one of the most thoroughly characterized electro-optic materials, and crystal growing techniques consistently produce large crystals of high perfection.
Applications that use the large nonlinear d coefficient of LiNbO3 include optical parametric oscillaton, difference frequency mixing to generate tunable infrared wavelengths, and second harmonic generation. With a broad spectral transmission, which ranges from 0.4 µm to 5.0 µm with an OH- absorption at 2.87 µm, a large negative birefringence, and a large nonlinear coefficient, phasematching is an effective way to generate tunable wavelengths over a broad wavelength range.Lithium Niobate is particularly effective for second harmonic generation of low power laser diodes in the 1.3 to 1.55 µm range.
Crystal Structure:                              Trigonal, Space group R3C, Point group 3m
Lattice Constant:                                 a=5.148Å , c=13.863Å
Melting Point:                                       1253° C
Curie Temperature:                             1140° C
Hardness (Mohs):                                5
Density:                                               4.64 g/cm³
Deliquescence                                     None
Optical Homogeneity                          ~5x10-5/cm
Transparency Range:                         420nm-5200nm
Absorption Coefficient:                        ~0.1%/cm @ 1064nm
Thermal Conductivity Coefficient:      38 W/m/K at 25℃

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