2-6 Inch LiNbO3(LN) Ingots boule
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2-6 Inch LiNbO3(LN) Ingots boule

Lithium niobate (LiNbO3, LN for short) crystal is a colorless or light yellow transparent crystal. LN crystal integrates various effects such as electro-optic, acousto-optic, photoelastic nonlinearity, and photorefractive properties. It is the most basic and important functional material used in various fields of the optoelectronics industry, and is known as "optical silicon". With the development of science and technology, LN series crystals are widely used in laser communication, optical information processing, optical integrated circuit substrate, image storage, frequency doubling and self-frequency doubling of lasers, optical parametric oscillation, etc.
Product Description

Crystal Physical Parameters: 

Crystal Structure

Trigonal, point group 3m

Lattice Parameters

a=5.148Å, c=13.863Å


4.64 g/cm3

Melting Point

1250 °C

Curie Point


Mohs Hardness


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


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.


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.