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LiNbO3 and MgO-LiNbO3 Crysta

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LiNbO3 and MgO-LiNbO3 Crysta
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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


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Product 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. 

01

Due to its large electro-optic and acousto-optic coefficiens, LiNbO3 crystal is the most commonly used material for Pockels Cells, Q-switches and phase modulators, aveguide substrate, and surface acoustic wave(SAW) wafers, etc. High quality and large size LiNbO3 crystals, waveguide substrate and SAW wafers are available. 

02

MgO:LiNbO3 (Magnesium Oxide Doped Lithium Niobate) crystal has similar effective nonlinear coefficients to pure LiNbO3 and exhibits higher optical damage threshold.

Product parameters

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 

3.03 KV 4.02 KV

Electrical field ||z, light ^ z

Electrical field ||x or y, light || z

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



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