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  • Linbo3 Crystal - China

    price: check with company for price

    LiNbO3 is widely used as electro-optic modulators and Q-switches for Nd:YAG, Nd:YLF and Ti:Sapphire lasers as well as modulators for fiber optics. The following table list the specifications of a typical LiNbO3 crystal used as Q-switch with transverse E-O modulation. The light propagates in z-axis and electric field applies to x-axis. The electro-optic coefficients of LiNbO3 are: r33 = 32 pm/V, r31 = 10 pm/V, r22 = 6.8 pm/V at low frequency and r33 = 31 pm/V, r31= 8.6 pm/V, r22 = 3.4 pm/V at high electric frequency. The half–wave voltage: Vπ=λd/(2no3r22L), r c=(ne/no)3r33-r13.
    LiNbO3 Q-Switch Specifications
    Size 9 X 9 X 25 mm3 or 4 X 4 X 15 mm3
    Other size is available upon request
    Tolerance of size Z-axis: ± 0.2 mm
    X-axis and Y-axis:±0.1 mm
    Chamfer less than 0.5 mm at 45°
    Accuracy of orientation Z-axis: <± 5’
    X-axis and Y-axis: < ± 10’
    Parallelism < 20"
    Finish 10/5 scratch/dig
    Flatness λ/8 at 633 nm
    AR-coating R < 0.2% @ 1064 nm
    Electrodes Gold/Chrome plated on X-faces
    Wavefront distortion <λ/4 @ 633 nm
    Extinction ratio > 400:1 @ 633 nm, φ6 mm beam
    LiNbO3 is also a good acousto-optic crystal and used for surface acoustic wave (SAW) wafer and A-O modulators. CASTECH provides acoustic (SAW) grade LiNbO3 crystals in wafers, as-cut boules, finished components and custom fabricated elements.
    Typical SAW Properties
    Cut Type SAW Velocity
    Vs (m/s) Electromechanical Coupling Factor
    k2s (%) Temperature Coefficient of Velocity
    TCV (10-6/oC) Temperature Coefficient of Delay
    TCD (10-6/oC)
    127.86o Y-X 3970 5.5 -60 78
    Y-X 3485 4.3 -85 95
    Typical Specifications
    Type Specifications Boule Wafer
    Diameter Φ3" Φ4" Φ3" Φ4"
    Length or Thickness(mm) ≤100 ≤50 0.35-0.5
    Orientation 127.86°Y, 64°Y, 135°Y, X, Y, Z, and other cut
    Ref. Flat Orientation X, Y
    Ref. Flat Length 22±2mm 32±2mm 22±2mm 32±2mm
    Front Side Polishing Mirror polished 5-15 Å
    Back Side Lapping 0.3-1.0 mm
    Flatness (mm) ≤ 15
    Bow (mm) ≤ 25


    Company Contact:


    • Phone: 15860296796

    • Address: 4/F, 12th Bldg, Taijiang Industrial Park, Juyuanzhou Industrial Zone,Fuzhou, Fujian, China, Fuzhou, Fujian, China

    • Email: Email


    Published date: August 11, 2016 -

    • Business Description: Our manufacturing capabilities consist of all types of customized lens, Beam Splitters, Polarizing Optics, Prisms, Filters, Coatings, Optical Systems, Optical Assemblies and Optical Systems Solutions, Laser Crystals, NLO Crystals. The products are widely used in laser industry, optical communication, laser display, medical equipment, survey equipment, precision Instrument and semiconductor.

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