Nonlinear optical (NLO) properties of benzimidazole – a review

This review provides a summary of the growth, progress, and characterization studies of benzimidazole single crystals and their derivatives. Various methods, including SEST, Vertical Bridgeman, and Sankaran Narayanan methods, were employed to grow organic nonlinear optical (NLO) single crystals of BMZ derivatives. The developed crystals underwent different characterization analyses such as UV-Vis-NIR spectroscopy, microhardness testing, and Second Harmonic Generation. The focus of this review is specifically on the advancement of the NLO characteristics of the BMZ single crystal.