Studies on the optical, thermal and mechanical properties of nonlinear optical material - Di-leucine hydrochloride

Single crystals of Di-leucine hydrochloride (DLHC) were grown by slow evaporation at constant temperature (40 °C). The compound crystallizes in the noncentrosymmetric space group P21. The physicochemical properties of the grown crystal were characterized by infrared spectroscopy, thermal and optical analysis, measurement of hardness. The second harmonic generation efficiency of the sample was investigated and it was found to be 1.3 times of KDP.