lithium niobate
Lithium niobate, as a birefringent crystal, is widely used in the fiber-optic communication field. The crystal has good physical and mechanical properties, a wide transmission range, high transmittance, easy processing, and lower material cost than other materials. Lithium niobate crystals are widely used in passive optical communication devices such as optical isolators, circulators, polarizing beamsplitters and polarizers.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Overview - Crystal Structure | Trigonal crystal system, space group R3c |
| Overview - Density | 4.64 g/cm^3 |
| Overview - Absorption Coefficient | ~ 0.1%/cm @1064nm |
| Overview - Deliquescence | Non-deliquescent |
| Overview - Relative Permittivity | e^T_11/e_0: 85 e^T_33/e_0: 29.5 |
| Overview - Thermal Expansion Coefficient | ||a, 2.0 x 10^-6/K ||c, 2.2 x 10^-6/K |
| Overview - Transmission Range | 420-5200nm |
| Overview - Optical Homogeneity | ~ 5 x 10^-5 /cm |
| Overview - Sellmeier Equation (λ in μm) | n_o^2(λ)=4.9048+0.11768/(λ^2-0.04750)-0.027169λ^2 n_e^2(λ)=4.5820+0.099169/(λ^2-0.04443)-0.021950λ^2 |
| Overview - Nonlinear Coefficients | d_33=34.4pm/V d_31=d_15=5.95pm/V d_22=3.07pm/V |
| Overview - Electro-optic Coefficients | g^T_33=32pm/V, g^S_33=31pm/V g^T_31=10pm/V, g^S_31=8.6pm/V g^T_22=6.8pm/V, g^S_22=3.4pm/V |
| Overview - Half-Wave Voltage (DC) | Electrical field ||z, light ^z 3.03KV Electrical field ||x or y, light || z 4.02KV |
| Overview - Effective Nonlinear Coefficient | d_eff=5.7pm/V or~14.6xd_36(KDP) for frequency doubling 1300 nm; d_eff=5.3pm/V or~13.6xd_36(KDP) for OPO pumped at 1300nm; d_eff=17.6pm/V or~45xd_36(KDP) for quasi-phase-matched structure; |
| Overview - Damage Threshold | 200MW/cm^2 |
| Pointing Accuracy | ±0.5° |
| Clear Aperture Dimension | >90% |
| Transmitted Wavefront Distortion | <λ/4@633nm |
| Parallelism | <20 arcsec |
| Specification - Side Perpendicularity | <5 arcmin |
Applications
Datasheet
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Supplier Information
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