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.
Advantages:
•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。
Nonlinear Optical properties of CLBO and BBO Crystal:
Wavelength(nm) | Crystal | Phase Matching Angle(°) | Deff (pm/V) | Angle Tolerance (mrad·cm) | Deviation 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 |