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Crystal Physical Parameters:
Crystal Structure | Trigonal, point group 3m |
Lattice Parameters | a=5.148Å, c=13.863Å |
Density | 4.64 g/cm3 |
Melting Point | 1250 °C |
Curie Point | 1142±2℃ |
Mohs Hardness | 5 |
| Dielectric Constant | e11/e0 = 85; e33/e0 = 29.5 |
| Thermal Conductivity | 38 W/m/°C at 25°C |
Thermal Expansion Coefficient | a1=a2 =2x10-6/°C, a3=2.2x10-6/ °C at 25°C |
Elastic Stiffness Constant | CE11 = 2.04 x 1011 N/m2, CE33 = 2.46 x 1011 N/m2 |
Applications:
surface acoustic wave filters, isolators, narrowband filters, sensors, photonic tunable filters, acousto-optic devices, optical gyroscopes, optical waveguides, optical switches, optical modulation directional couplers, optical communication modulators, interferometers gyrators, high-speed long-distance communication devices and frequency multipliers, etc.
Innovation:
Through the transformation of the growth equipment, the self-created simulated crystal growth system (CSCGS) can design the crystal shape according to the needs, and the microcomputer chip controls the crystal shape change according to the crystal growth state and the processing of the precise sensor signal. A set of gradient composite temperature field structure (GCT) is independently designed, so that the temperature gradient in the crystal, in the melt and on the solid-liquid interface reaches the excellent state of growing optical crystals, which greatly improves the optical uniformity of LN crystals.
