ABSTRACT This study reports the synthesis and growth of semi‐organic sodium sulfanilate dihydrate (SSD) single crystals using slow evaporation solution technique (SEST). This study presents a comprehensive investigation into the growth process, structural configuration, thermal behavior, and both linear and nonlinear optical responses of the grown crystal, highlighting its potential for NLO applications. The structural characteristics of the grown SSD single crystal were examined using single‐crystal and powder X‐ray diffraction, confirming its crystallinity and phase purity. HR‐XRD provided insight into the crystalline quality and types of defects present. Functional groups were identified through FT‐IR spectroscopy. Optical transmittance and bandgap were determined using UV–vis spectroscopy, with the band gap estimated to be 3.849 eV. Photoluminescence (PL) studies were conducted by exciting the sample at 420 nm. The LDT value was evaluated to be 3.2 GW/cm 2 using a Nd:YAG laser. TG‐DTA was employed to evaluate the stability and the phase transition behavior of the sample. Additionally, the third‐order NLO response was investigated by the Z‐scan technique, employing a Ti: Sapphire laser oscillator for irradiation.
Jyoti et al. (Fri,) studied this question.