Abstract
The third order nonlinear optical properties of the lithium potassium borate (LiKB 4 O 7 ) single crystal have been investigated by means of the rotational Maker fringe technique using Nd:YAG laser at 1064 nm working in picosecond regime. The value of the third order nonlinear optical susceptibility was calculated using the theoretical model of Kajzar et al. and was found to be about 1.4 × 10 −21 m 2 V −2 that is one order higher than that of fused silica.
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