LiNbO3 Substrate

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. Its single crystal is optical waveguide, mobile phone, piezoelectric sensor, optical modulator and various other materials. Important material for linear and nonlinear optical applications. It also has a photorefractive effect. Lithium niobate crystals are widely used in optical communications, information processing, integrated optical circuits, image storage, harmonic generation, frequency doubling devices, parametric oscillation, 1064nm laser frequency doubling, and quadruple frequency phase matching Devices and other aspects. Such as: SAW filter, Q-switch, electro-optical dimmer, parametric oscillator.

OST Photonics offers high quality LiNbO3 substrates for researchers and industries. Crystal orientation, size and thickness can be customized according to your requirements.

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Features

  • Stable mechanical properties

  • Good machinability

  • Heat and corrosion resistance

  • High electro-optic and high nonlinear optic coefficients

Applications

  • Surfaced acoustic devices

  • Q-switching devices

  • MEMS devices

  • Periodically poled lithium niobate (PPLN) waveguides

  • EO Phase Modulators

  • Optical Modulator

Processing Capability

  • Orientation: X, Y, Z, Y36, Y41, Y64, Y128 etc.

  • Dimension: 2”, 3”, 4”, 6”, 8”, 5x5mm, 10x10mm, 20x20mm, etc.

  • Thickness: 0.35mm, 0.5mm, 1.0mm, etc.

  • Available items: wafers, substrates, blanks and customized optics

Specification and properties of LiNbO3 Substrates

Growth Method

Czochralski method

Crystal Structure

M3

Lattice Constant

a=b=5.148 Å     c=13.863 Å

Melting Point

1250 ℃

Density

4.64 g/cm3

Hardness

5 Mohs

Refractive Index

no=2.286 ne=2.203 at 632.8nm

Nonlinear Coefficient

d33=34.45, d31=d15=5.95, d22=13.07 (pmv-1)

Electro-optical Coefficient

γ13=8.6, γ22=3.4, γ33=30.8, γ51=28.0, γ22=6.00 (pmv-1)

Optical Transmittance

370 ~ 5000nm and >68% at 632.8nm

Thermal Expansion

a11=15.4×10^-6/K, a33=7.5×10^-6/K

Orientation

X, Y, Z, Y36, Y41, Y64, Y128 etc.

Orientation Tolerance

±0.25°

Dimension

2”, 3”, 4”, 6”, 8”, 5x5mm, 10x10mm, 20x20mm, etc.

Dimension Tolerance

±0.2 mm or better

Thickness

0.35mm, 0.5mm, 1.0mm, etc.

Thickness Tolerance

±0.025 mm or better

Surface Finish

Single side polished (SSP)/Double sides polished (DSP)

Roughness

Ra≤5Å

Package

Class 100 clean bag, Class 1000 super clean room