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    LiNbO3

    LiNbO3 Crystal is widely used as frequency doublers for wavelength >1μm and optical parametric oscillators (OPOs) pumped at 1064 nm as well as quasi-phase-matched (QPM) devices. Additionally due to its large Electro-Optic(E-O) and Acousto-Optic(A-O) coefficients, LiNbO3 crystal is the most commonly used material for Pockel Cells, Q-switches and phase modulators, waveguide substrate, and surface acoustic wave(SAW) wafers, etc. CASTECH can provide LiNbO3 crystals with high quality and large size for all these applications.


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    Structural and Physical Properties of LiNbO3

     

    Crystal StructureTrigonal, Space group R3c, Point group 3m
    Cell Parameters

    a=5.148 ? , c=13.863 ?

    Melting Point1253℃
    Curie Temperature1140℃
    Mohs Hardness5
    Density4.64g/cm3

    Elastic Stiffness Coefficients

    CE11 =2.33(×1011N/m2  )

    CE33 =2.77(×1011N/m2  )

     

    Optical and Electro-optical Properties of LiNbO3:

     

    Transparency Range420-5200nm
    Optical Homogeneity

    ~ 5 x 10-5/cm

    Refractive indices at 1064nm

    ne = 2.146, no = 2.220 @ 1300 nm

    ne = 2.156, no = 2.232 @ 1064 nm

    ne = 2.203, no = 2.286 @ 632.8 nm

    NLO Coefficients

    d33 = 86 x d36 (KDP)

    d31 =11.6 x d36 (KDP)

    d22 = 5.6 x d36 (KDP)

    Effective NLO 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

    100 MW/cm2 (10 ns, 1064nm)

     

     

    Thermal and Electrical Properties of LiNbO3:

     

    Melting Point1250℃
    Curie Temperature1140℃
    Thermal Conductivity38W/m/K @25℃
    Thermal Expansion Coefficients (at 25℃)//a, 2.0×10-6/K
    //c, 2.2×10-6/K
    Resistivity2×10-6 Ω·cm @200℃
    Dielectric ConstantsεS110  =43               εT110=78  
    εS330  =28               εT330= 32
    Piezoelectric Strain ConstantD22=2.04(×10-11 C/N )
    D33=19.22 (×10-11 C/N  )

     

     

    The Sellmeier equations (λ in μm):

           no2=4.9048+0.11768/(λ2-0.04750)-0.027169λ2

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


    Specifications:


           ?   Transmitting wavefront distortion: less than λ/4 @ 633 nm
           ?   Dimension tolerance: (W ±0.1 mm) x (H ±0.1 mm) x (L ±0.2mm)
           ?   Clear aperture: > 90% central area
           ?   Flatness: λ/8 @ 633 nm
           ?   Scratch/Dig code: 20/10 to MIL-PRF-13830B
           ?   Parallelism: better than 20 arc seconds
           ?   Perpendicularity: 5 arc minutes
           ?   Angle tolerance:  < ± 0.5°
           ?   AR coating: dual wave band AR coating at 1064/532 nm on both surfaces, with R < 0.2% at 1064nm and R < 0.5% at 532nm per surface.

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  • 陈飞宇出席Vogue Film时装电影展 潮酷少年初长成 2019-10-06
  • 校外培训机构专项整治 对无证无照超纲超前说“不” 2019-10-06
  • 欧盟采取措施反击美国加征关税 2019-09-29
  • 女子痴迷鹿晗 商场门口对人形立牌拭泪亲吻 2019-09-29
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  • 好事要支持,解决劳动力更是好事 2019-09-26
  • 来自井下580米的呼唤文章中国国家地理网 2019-09-22
  • 秦皇岛市“学国学 正家风 倡廉洁”微视频传播正能量 2019-09-22
  • 北京顺义法院打造全网式立体化纠纷解决体系 2019-09-18
  • 家装行业猫腻多:“低价全包”变身“加价全包” 2019-09-15
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