LiNbO3
Lithium niobate (LiNbO3) is a compound of niobium, lithium and oxygen, and it is a negative crystal (n0>ne). The deformed lithium niobate crystal is a material with multiple properties such as piezoelectric, ferroelectric, optoelectronic, nonlinear optics, and pyroelectric.
Lithium niobate single crystal is an important material for linear and nonlinear optical applications. and it also has a photorefractive effect. it is widely used in optical communications, information processing, integrated optical circuits, image storage, harmonic generation, frequency doubling devices, parametric oscillation, 1064nm laser frequency doubling, quadruple frequency phase matching devices, SAW filter, Q-switch, electro-optical dimmer, parametric oscillator. and other aspects.
For doped MgO:LiNbO3 crystal, its damage resistance threshold is more than doubled than that of pure LiNbO3 crystal.
Uses/Applications
it is widely used in optical communications, information processing, integrated optical circuits, image storage, harmonic generation, frequency doubling devices, parametric oscillation, 1064nm laser frequency doubling, quadruple frequency phase matching devices, SAW filter, Q-switch, electro-optical dimmer, parametric oscillator. and other aspects.
Features/Benefits
The deformed lithium niobate crystal is a material with multiple properties such as piezoelectric, ferroelectric, optoelectronic, nonlinear optics, and pyroelectric.
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Growth Method
Czochralski
Crystal Structure
Trigonal
Lattice Constant
a=b=5.148Å c=13.863 Å
Melting Point
1250℃
Curie Temperature
1140℃
Density
4.64(g/cm3)
Mohs Hardness
5（mohs）
Transmission Wavelength
0.4-2.9μm
Refractive Index
no=2.286 ne=2.203 （632.8nm）
Intensity of Spontaneous Polarization
50×10C/cm
Nonlinear Coefficient
d22 = 2.1 d31 = - 4.5 d33 = -0.27 （pmv-1）
Electro-optic Coefficient
γ13=8.6，γ22=3.4，γ33=30.8，γ51=28.0，（pmv-1）
Optical Damage Threshold
250 MW/cm2 @ 1064 nm, 10nsec.
Transmittance
370～5000nm >68%
（632.8nm）
Thermal Expansion
//a, 2.0 x 10-6 / K
//c, 16.7 x 10-6 / KAbsorption Loss
@ 1064 nm < 0.1 %/cm
Product Specifications
Dimension
Equal to or less than Ø4″
Surface Quality
10/5
Dimensional Tolerance
Z axis: ±0.3mm
X axis, Y axis: ±0.1mmFlatness
v8 （632.8nm）
Chamfer
Less than 0.5mm, 45 º±5 º
Coating
R<0.2%（1064nm）
Crystal Orientation Accuracy
Z axis: 5′
X, Y axis:<10′Wavefront Distortion
<N4（633nm）
Parallelism
<10′
Extinction Ratio
>400:1(633nm)φ6mm beam
Package
Class 100 clean bag, Class 1000 super clean room
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Dimension
Equal to or less than Ø4″
Dimensional Tolerance
Z axis: ±0.3mm
X axis, Y axis: ±0.1mm