Lithium niobate (LiNbO3) is a versatile material in photonics and optoelectronics. It has a wide transparency range from 420 nm to 5.2 µm, as well as excellent nonlinear, electro-optic and piezoelectric properties. Alfa Chemistry offers various types of LiNbO3 crystals.
Request bulk or custom formats
Catalog Number
ACMA00027419
Product Name
LiNbO3 Crystals, 9mm*9mm*25mm
DimensionTolerance
W±0.1mm/H±0.1mm/L±0.2mm
Coating
AR/AR @ 1064 nm, with gold electrodes
Perpendicularity
< 5 arcmin
Angle Tolerance
< 30 arcmin
Surface Quality
10-5 scratch % dig
ClearAperture
90% of full aperture
Crystal Structure
Trigonal, 3m
Lattice Parameters
a=5.148 Å , c=13.863 Å
Optical Symmetry
Negative uniaxial (no > ne)
Optical Homogeneity
~ 5x10-5/cm
Transparency Region
420 nm - 5.2 μm
Absorption Coefficient
~0.1%/cm @ 1064 nm
Refractive Indices
at 1064 nm
ne = 2.146, no = 2.220 @ 1300 nm
ne = 2.156, no = 2.232 @ 1064 nm
ne = 2.203, no = 2.286 @ 632.8 nm
Expansion Coefficient
(Thermal expansion coefficient) @ 25 °C
//a, 2.0 x 10-6 / K
//c, 16.7 x 10-6 / K
Thermal Optical Coefficient
dno/dT = -0.874 x 10-6 / K at 1.4 µm
dne/dT = 39.073 x 10-6 / K at 1.4 µm
Thermal Conductivity
~ 5 W/m/K @ 25 °C
Sellmeier Equations
no2 = 4.9048 + 0.11768 / (λ2 - 0.04750) - 0.027169λ2
ne2 = 4.5820 + 0.099169 / (λ2 - 0.04443) - 0.021950λ2
1. Wide transparent region from 420 nm to 5200 nm
2. High nonlinearity, electro-optic and acousto-optic coefficients
3. Non-hygroscopic, mechanically and chemically stable
The most common applications include infrared range optical modulation and Q-switching, nonlinear frequency conversion for >1 µm wavelengths. Their electrical and optical properties can be tuned using magnesium or zirconium dopants.
