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  • BBO
  • LBO
  • KTA&KTP
  • KDP&DKDP
  • MgO:LiNbO3
  • MgO:LiNbO3

    LiNbO3(Lithium Niobate) is so-called all-powerful function crystal, but the versatility make it cannot be the most excellent in specific applications. LNG Optics only deal with laser grade LiNbO3, offers reliable and cost-effective frequency doublers, Optical Parameter Oscillator, Electro-Optic modulator, Q-Switch and Birefringent elements.  

    Features & Standard specifications from LNG Optics:

    Dimensions: Up to 10x10mm²±0.1mm

    Length: Up to 60mm +0.2mm/-0.1mm

    Phase Matching Angle accuracy: Δθ < 0.5o, Δφ <0.5o

    Flatness: λ/8 @ 633nm

    Transmitted Wavefront Distortion: λ/4 @ 633nm

    Surface quality: 10/5 S/D before coating, 20/10 S/D after regular AR coatings

    Clear Aperture: 90% central area

    Parallelism: 20 arc seconds

    Perpendicularity: 10 arc minutes

    Chamfers: 0.2mm x 45°±5°

    AR coatings: V-Type, Dual band

    Laser damage threshold (polished only): LiNbO3250 MW/cm2, MgO:LiNbO31GW/cm2for 1064nm 10ns pulse

     

    Physical and Chemical Properties:

     

    Crystal Structure

    Trigonal, space group R3c, Point group 3m

    Lattice Parameters (Å)

    a=5.148, c=13.863

    Melting point (oC)

    1250

    Curie point (oC)

    1140

    Mohs Hardness

    5

    Density (gram/cm3)

    4.64

    Hygroscopic Susceptibility

    No

    Thermal Conductivity (W/m/K)

    38 @ room temperature 

    Thermal Expansion Coefficients (K-1)

    //a, 2 x 10-6, //c, 2.2 x 10-6 

    Resistivity (Ωcm)

    10-20 x 106

    Relative Dielectric Constant 

    @ 25oC 1KHz

    εT11= 43.2, εs110 = 42.5

    εT33= 20.8, εs330 = 20.0

     

    Optical and Nonlinear Properties

     

    Transparency Range

    420-5200nm

    Sellmeier Equations (λ in μm)

    no2=4.9048+0.11768/(λ2–0.0475)–0.027169λ2

    ne2=4.5820+0.099169/(λ2-0.04443)–0.02195λ2

    Refractive index

    no=2.286, ne=2.203 @ 632.8nm

    no=2.232, ne=2.156 @ 1064nm

    NLO Coefficient @ 1064nm (pm/V)

    d33=34.45, d31=d15=5.95, d22=13.07

    Electro-Optics Coefficients (pm/V)

    γ33=30.8, γ51=28, γ13=8.6, γ22=6