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EO crystal
optical crystal
LiNbO3
Lithium niobate (LiNbO3, LN) crystals are widely used for frequency doubling of wavelengths above 1000 nm and optical parametric amplification of 1064 nm pump light, and can also be used for quasi-pha..
Product description
Lithium niobate (LiNbO3, LN) crystals are widely used for frequency doubling of wavelengths above 1000 nm and optical parametric amplification of 1064 nm pump light, and can also be used for quasi-phase matching. Meanwhile, lithium niobate crystals are also widely applied in photoelectric regulators and waveguide materials, and serve as Q-switches for Nd:YAG, Nd:YLF, and Ti:sapphire lasers. Zhongce Company provides various specifications of high-quality lithium niobate crystals.
Product Introduction:
Lithium niobate crystals (LiNbO3, LN) are widely used for frequency doubling of wavelengths above 1000 nm and optical parametric amplification of 1064 nm pump light, and can also be used for quasi-phase matching. At the same time, due to the large electro-optic coefficient and acousto-optic coefficient of lithium niobate, it is often used to manufacture Pockels cells, Q-switches, phase modulators, waveguide materials, acoustic wave wafers, etc. Zhongce Technology can provide high-quality and large-sized lithium niobate crystals of various specifications for the above applications.
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Crystal Structure
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Trigonal system, space group R3c, point group 3m
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Unit Cell Parameters
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a = 5.148 Å, c = 13.863 Å
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Melting Point
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1253 ℃
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Curie Temperature
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1140 ℃
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Mohs Hardness
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5 Mohs
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Density
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4.64 g/cm3
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Elastic Stiffness Coefficient
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CE11 = 2.33（×1011 N/m2）
CE33 = 2.77（×1011 N/m2）
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Transmission Range
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420-5200 nm
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Optical Homogeneity
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~5×10-5 /cm
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Refractive Index
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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
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Effective Nonlinear Coefficient
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d33 = 86×d36（KDP） = 37.84 pm/V
d31 = 11.6×d36（KDP） = 5.10 pm/V
d22 = 5.6×d36（KDP） = 2.46 pm/V
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Nonlinear Optical Coefficient
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deff（I） = d31sinθ - d22cosθsin3φ
deff（II） = d22cos2θcos3φ
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Sellmeier Equation
（λ unit μm）
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no2 = 4.9048 + 0.11768 / (λ2 - 0.04750) - 0.027169 λ2
ne2 = 4.5820 + 0.099169 /(λ2 - 0.04443) - 0.02195 λ2
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Absorption Coefficient
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0.1%/cm @ 1064 nm
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Thermo-Optic Coefficient
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dno/dT = -0.874×10-6 /K @ 1400 nm
dne/dT = 39.073×10-6 /K @ 1400 nm
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Damage Threshold
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100 MW/cm2（10 ns, 1064 nm）
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| Melting Point | 1250 ℃ |
| Curie Temperature | 1140 ℃ |
| Thermal Conductivity | 38 W/m/K @ 25 ℃ |
| Coefficient of Thermal Expansion （@ 25℃） |
//a, 2.0×10-6 /K
//c, 2.2×10-6 /K
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| Resistivity | 2×10-6 Ω·cm @ 200 ℃ |
| Dielectric Constant |
εS11/ε0 = 43, εT11/ε0 = 78
εS33/ε0 = 28, εT33/ε0 = 2
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| Piezoelectric Constant |
D22 = 2.04×10-11 C/N
D33 = 19.22×10-11 C/N
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| Electro-Optic Coefficient |
γT33 = 32 pm/V, γS33 = 31 pm/V,
γT31 = 10 pm/V, γS31 = 8.6 pm/V,
γT22 = 6.8 pm/V, γS22 = 3.4 pm/V,
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Half-Wave Voltage, DC
Electric field // z, light ⊥ z;
Electric field // x or y, light ⊥ z;
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3.03 KV
4.02 KV
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Specifications of LiNO3 Crystals:
| Size Tolerance | （W±0.1 mm）×（H±0.1 mm）×（L±0.2 mm） |
| Effective Aperture | 90% of the central area |
| Surface Finish | 20/10, referring to MIL-PRF-13830B standard |
| Flatness | λ/8 @ 633 nm |
| Transmission Wavefront Distortion | λ/4 @ 633 nm |
| Parallelism | 20″ |
| Perpendicularity | ≦15′ |
| Angle Tolerance | ≦0.5° |
| Quality Assurance Period | One year (under normal use) |
Zhongce Technology can provide the following film systems:
- Dual-wavelength anti-reflection film @ 1064/532 nm, with low reflectivity R＜0.2% @ 1064 nm and R＜0.2% @ 532 nm
- Anti-reflection film or gold/chromium can be coated for electro-optic products
- Customized film system services are available
