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                  CLBO Crystal

                  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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                  Description

                  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)

                   

                   

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