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  • CLBO

  • Cesium Lithium Borate (CsLiB6O10,CLBO) is a newly developed crystal with excellent UV nonlinear feature,and widely used for semiconductor inspection,micro processing,bio-medical,UV-LIDAR,etc. Compared to BBO,it has larger spectral and temperature acceptance,larger angle tolerance and smaller walk-off angle (see Table 1). These advantages make CLBO obtain larger SHG conversion efficiencies than BBO. Moreover,it is suitable for FOHG and FHG of high-power Nd:YAG laser.
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    CLBO is featured by

           •   Cut-off wavelength up to 180nm;
           •   Maximum FOHG and FHG conversion efficiencies of Nd:YAG laser;
           •   Relatively large effective NLO coefficient (about two times that of KDP);
           •   Wide acceptance angle and small walk-off angle;
           •   The VUV output at 193nm is available by phase matching;
           •   No saturation for high-power generation;
           •   Short grow cycle and large size.

     

    CASTECH offers:

           •   Strict quality control;
           •   Cut angle and dimensions upon request;
           •   AR-coating,sealed-housing and repolishing services;
           •   Fast delivery (10 working days for polished only,15 working days for AR-coated).


     

    Table1. Nonlinear Optical properties of CLBO and BBO Crystal

     

    Wavelength(nm)

    Crystal

    Phase
    Matching 

    Angle(°)

    Deff

    (pm/V)

    Angle Tolerance

    (mrad·cm)

    Walk-off

    Angle (°)

    Spectral  Acceptance

    (nm·cm)

    Temperature  Acceptance

    (℃·cm)

    532+532=266

    CLBO

    61.7

    0.84

    0.49

    1.83

    0.13

    8.3

    BBO

    47.7

    1.32

    0.17

    4.80

    0.07

    4.5

    1064+266=213

    CLBO

    68.4

    0.87

    0.42

    1.69

    0.16

    4.6

    BBO

    51.1

    1.26

    0.11

    5.34

    0.08

    3.1

     

    Table 2. Structural Properties of CLBO

    Crystal Structure

    Tetragonal,Space group

    Lattice Constant

    a=b=10.494Å,c=8.939Å

    Symmetry

    Z=4

    Melting Point

    About 844.5℃

     

    Table 3. Optical and Nonlinear Optical Properties of CLBO

    Transparency Range

    180-2750nm

    Effective NLO Coefficient

    1.01pm/V at 532nm,1.16pm/V at 488nm,0.95pm/V at 1064nm

    Damage Threshold

    26GW/cm2

    Walk-off Angle

    1.78°at 1064nm,1.83°at 532nm,0.98°at 488nm

    Angle Acceptance (mrad·cm)

    1.02 at 1064nm,0.49 at 532nm,0.84 at 488nm

    Spectral  Acceptance (nm·cm)

    7.03 at 1064nm,0.13 at 532nm,0.09 at 488nm

    Temperature  Acceptance (℃·cm)

    9.4

    NLO Coefficients

    deff(Ⅰ)=d36sinθmsin(2 φ)

    deff(Ⅱ)=d36sin(2θm)cos(2 φ)

    Sellmeier Equations (λ in μm)

    CLBO at 20℃

    no2=2.2104+0.01018/(λ2-0.01424)-0.01258λ2

    ne2=2.0588+0.00838/(λ2-0.01363)-0.00607λ2

    (0.1914< λ <2.09 μm)

     

     

  • NLO Crystals_Cesium Lithium Borate (CsLiB6O10 , CLBO).pdf

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