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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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