Abstract
We report the fourth-harmonic generation of 1.5 ps, 1.053 μm glass laser pulses, where group velocity mismatch plays a significant role, at intensities up to 100 GW/cm2 using newly developed crystal, cesium lithium borate (CsLiB6O10). Type-I doubler and type-I quadrupler were used in the fourth harmonic generation experimental scheme. Energy conversion efficiencies of 24% and 53% have been achieved for frequency quadrupling and doubling of the fundamental glass laser pulses, respectively.
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