LiNbO3
Lithium niobate (LiNbO3, LN) crystals are widely used for frequency doubling above 1000 nm and optical parametric amplification of 1064 nm pump light, and can also be used for quasi-phase matching. Due to their large electro-optic and acousto-optic coefficients, they are often used to make Pockels cells, Q-switches, phase modulators, waveguide materials, acoustic wave plates, etc. Zhongce can provide high-quality, large-size lithium niobate crystals of various specifications.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Flatness | λ/8 @ 633 nm |
| Transmitted Wavefront Distortion | λ/4 @ 633 nm |
| Parallelism | 20″ |
| Warranty Period | One year (normal use) |
| Crystal Structure | Trigonal crystal system; space group R3c; point group 3m |
| Unit Cell Parameters | a=5.148 Å，c=13.863 Å |
| Melting Point | 1253 ℃ |
| Curie Temperature | 1140 ℃ |
| Mohs Hardness | 5 Mohs |
| Elastic Stiffness Coefficient | CE11=2.33（×1011 N/m^2） CE33=2.77（×1011 N/m^2） |
| Transmission Range | 420-5200 nm |
| Optical Homogeneity | ~5×10^-5 /cm |
| Refractive Index | n_e=2.146，no=2.220 @ 1300 nm n_e=2.156，no=2.232 @ 1064 nm n_e=2.203，no=2.286 @ 632.8 nm |
| Effective Nonlinear Coefficient | d_33=86×d36（KDP）=37.84 pm/V d_31=11.6×d36（KDP）=5.10 pm/V d_22=5.6×d36（KDP）=2.46 pm/V |
| Nonlinear Optical Coefficient | deff（I）=d31sinθ-d22cosθsin3φ deff（II）=d22cos2θcos3φ |
| Sellmeier Equation (Pure YVO4, λ in μm) | n_o^2 = 4.9048 + 0.11768 / (λ^2 - 0.04750) - 0.027169 λ^2 n_e^2 = 4.5820 + 0.099169 /(λ^2 - 0.04443) - 0.02195 λ^2 |
| Absorption Coefficient | 0.1%/cm @ 1064 nm |
| Melting Point (2) | 1250 ℃ |
| Curie Temperature (2) | 1140 ℃ |
| k) | //a，2.0×10^-6 /K //c，2.2×10^-6 /K |
| Half-Wave Voltage, DC Electric Field //z, Light ⊥z; Electric Field //x or y, Light ⊥z | 3.03 KV 4.02 KV |
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