Overview: Lithium Niobate (LiNbO3) is widely used in fiber communication devices as Birefringent
crystal. It has good mechanical and physical properties and is
ideal for optical polarizing components due to its wide
transparency range and low cost. It is an excellent material in
fiber communication applications such as isolators, circulators,
beam displacers, and other polarizing optics. General Specifications Of LiNbO3: | Dimension | Dia:3-4mm, L:1-100mm(other size is available) | | Dimension tolerance | Z-axis:+/-0.2mm, X-axis:+/-0.1mm, Y-axis:+/-0.1mm | | Chamfer | <0.5×45° | | Accuracy of orientation | Z-axis:<+/-5’, X-axis and Y-axis:<+/-10’ | | Parallelism | <20 arc seconds | | Scratch/Dig | 10/5@MIL-O-13830A | | Flatness | λ/8@633nm | | Wavefront distortion | λ/4@633nm | | AR coating | AR@1064nm R<0.2% |
Physical and Optical Properties of LiNbO3: | Crystal Structure | Trigonal, space group R3c | | Cell Parameters | a = 0.515Å, c = 13.863Å, Z = 6Å | | Melting Point | 1255±5oC | | Curie Point | 1140±5oC | | Mohs Hardness | 5 | | Density | 4.64 g/cm3 | | Absorption Coefficient | ~ 0.1%/cm@1064nm | | Solubility | insoluble in H2O | | Relative Dielectric Constant | eT11/e0: 85
eT33/e0: 29.5 | | Thermal Expansion Coefficients(@25oC) | ||a, 2.0 x 10-6/K
||c, 2.2 x 10-6/K | | Thermal Conductivity | 38 W /m /K @ 25oC | | Transparency Range | 420-5200 nm | | Optical Homogeneity | ~ 5 x 10-5 /cm | | Sellmeier Equations(λ in um) | no2(λ) = 4.9048+0.11768/(λ2 - 0.04750) - 0.027169 λ2
ne2(λ) = 4.5820+0.099169/(λ2- 0.04443) - 0.021950 λ2 | | NLO Coefficients | d33 = 34.4 pm/V
d31 = d15 = 5.95 pm/V
d22 = 3.07 pm/V | | Electro-Optic Coefficients | gT33 = 32 pm/V, gS33 = 31 pm/V
gT31 = 10 pm/V, gS31 = 8.6 pm/V
gT22 = 6.8 pm/V, gS22= 3.4 pm/V | | Half-Wave Voltage, DC | Electrical field ||z, light ^ z 3.03KV
Electrical field ||x or y, light || z 4.02 KV | | Efficiency NLO Coefficients | deff=5.7pm/V or~14.6xd36(KDP) for frequency doubling 1300nm;
deff=5.3pm/V or~13.6xd36(KDP) for OPO pumped at 1300nm;
deff=17.6pm/V or~45xd36(KDP) for quasi-phase-matched structure; | | Damage Threshold | 200 MW/cm2 |
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