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Features
LiNbO3(Lithium Niobate) crystal has high mechanical and chemical stability, good physical properties, wide transparency range as well as high optical homogeneity. LiNbO3 crystal is widely used as frequency doublers for wavelength > 1mm and optical parametric oscillators (OPOs) pumped at 1064 nm. Due to its large electro-optic and acousto-optic coefficients, LiNbO3 crystal is the most commonly used material for Pockels Cells, Q-switches and phase modulators, waveguide substrate, and surface acoustic wave(SAW) wafers, etc. High quality and large size LiNbO3 crystals, waveguide substrate and SAW wafers are available. MgO:LiNbO3 (Magnesium Oxide Doped Lithium Niobate) crystal has similar effective nonlinear coefficients to pure LiNbO3 and exhibits higher optical damage threshold.
Specifications
Capabilities:
Aperture: 1-15 x 2-15mm
Lenght: 2 - 50mm
Cutting Angle q and f: Determined by different kinds of homonic generartion
Phase matching type: Type I or Type II


Specifications:

Angle tolerance: Δθ< ± 0.5°; Δφ< ±0.5°
Dimensional Tolerance: (W ± 0.1mm) x (H ± 0.1mm) x (L + 0.2mm/-0.1mm)
Flatness: <λ/8 at 633nm
Surface Quality: 20/10 Scracth/Dig
Parallelism: < 20 arc seconds
Perpendicularity: < 5 arc minutes
Wavefront Distortion: <λ/8 at 633nm
Clear Aperture: Central 95%
Chamfer: 0.15x45°
Coating: * AR @ wavelegth specified by customer


Properties:

Crystal Structure Trigonal, space group R3c
Cell Parameters a = 0.515, c = 13.863, Z = 6
Melting Point 1255 +/-5℃
Curie Point 1140 +/-5℃
Mohs Hardness 5
Density 4.64 g/cm3
Absorption Coefficient ~ 0.1%/cm @ 1064 nm
Solubility: insoluble in H2O
Relative Dielectric Constant eT11/e0: 85
eT33/e0: 29.5
Thermal Expansion Coefficients at 25℃ ||a, 2.0 x 10-6/K @ 25℃
||c, 2.2 x 10-6/K @ 25℃
Thermal Conductivity 38 W /m /K @ 25℃

 

Transparency Range 420 - 5200 nm
Refractive Indices ne = 2.146, no = 2.220 @ 1300 nm
ne = 2.156, no = 2.322 @ 1064 nm
ne = 2.203, no = 2.286 @ 632.8 m
Optical Homogeneity ~ 5 x 10-5 /cm
Sellmeier Equations( l in mm) 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 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,
Half-Wave Voltage, DC
Electrical field ||z, light ^ z
Electrical field ||x or y, light || z
3.03 KV 4.02 KV
Damage Threshold 200 MW/cm2 (10 ns)
Efficiency NLO Coefficients deff=5.7pm/V or~14.6xd36(KDP) for frequency doubling 1300 nm;
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;

 

MgO:LiNbO3

Specification:

Dimensional Tolerance: (W ± 0.1mm) x (H ± 0.1mm) x (L + 0.2mm/-0.1mm)
Flatness: <λ/8 at 633nm
Surface Quality: 20/10 Scracth/Dig
Parallelism: < 20 arc seconds
Perpendicularity: < 5 arc minutes
Wavefront Distortion: <λ/8 at 633nm
Clear Aperture: Central 95%
Chamfer: 0.15x45°
Coating: * AR @ wavelegth specified by customer

Sellmeier Equations:
no2(l) = 4.8762 + 0.11554/(l2 - 0.04674) - 0.033119 x l2/(l in mm)
no2(l) = 4.5469 + 0.094779/(l2 - 0.044394) - 0.026721 x l2