LiNbO3

Lithium Niobate (LiNbO3)

Lithium Niobate (LiNbO3) possesses a combination of unique electro-optic, acoustic, piezoelectric, pyroelectric and non-linear optical properties making it a suitable material for applications in acoustic, electro-optical and non-linear optical devices, high-temperature acoustic transducers, receivers-transmitters of acoustic vibrations, air force acceleration meters, acoustic wave delay lines, deflectors, generators of non-linear distorted waves, acoustic filters, electro-optical Q-modulators (Q-switch), converters, frequency doublers and resonators in laser systems, non-linear elements in parametric light generators, etc. An indispensable condition of some of these applications is a high degree of optical uniformity of Lithium Niobate crystals used for fabrication of active elements.

Characteristics：

ROPERTY	VALUE
Chemical formula	LiNbO3
Crystallographic system	Trigonal
Lattice Constants, Å	a=5,148 c= 13,863
Molecular Weight	147,9
Point group	3m
Density, g/cm3	4,644
Transmission Range, mm	0,4 - 5,0
Dielectric Constant	29
Melting Temperature, °C	1255
Thermal Conductivity, W/(m K) at 300 K	5,6
Thermal Expansion, K-1 at 300 K aa (perpendicular) ac (parallel)	15 x 10-6 4,1 x 10-6
Specific Heat, cal/(g K)	0,15
Hardness (Mohs)	~5
Bandgap, eV	4,0
Solubility in water	None
Electro-Optical Coefficients, pm/V	r33=30,8	r31=8,6
	r22=3,4	r51=28
SAW Velocity, m/s	3490 - 3890
Nonlinear Optical Coefficient, d/d36 KDP	d31=11,6	d33=86
	d22=5,6
Synchronism Width: temperature, °C x cm spectral, Å x cm angle, mrad x cm	0,6 2,3 47
Optical Damage Threshold, MW/cm2	10 - 40
Birefringence Gradient	< 5 x 10-5
Spectral Refractive index at 3391 nm at 1152 nm at 633 nm at 546 nm at 436nm	ne = 2,0822	no = 2,1451
	ne = 2,1515	no = 2,2273
	ne = 2,20240	no = 2,28647
	ne = 2,22816	no = 2,31657
	ne = 2,29278	no = 2,39276

Specifications of LiNbO3 wedges

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