Comparative characterization study of pure and glycine doped potassium thiourea chloride crystal for laser frequency conversion applications

In current study doping of glycine (G) in potassium thiourea chloride (PTC) crystal has been firstly achieved and glycine doped PTC (G-PTC) crystal has been grown by slow solution evaporation technique. The unit cell parameters of crystals have been determined by means of single crystal X-ray diffraction technique. The functional groups of pure and G-PTC crystal have been identified using Fourier transform infrared analysis. In UV–visible studies, the increased optical transparency of G-PTC crystal has been measured within 200–900 nm and the optical constants have been determined using the transmittance data. The Kurtz and Perry test has been performed to confirm the enhancement in second harmonic generation (SHG) efficiency of G-PTC crystal as compared to KDP and PTC crystal. The temperature dependent dielectric analysis has been carried out to investigate the dielectric constant and dielectric loss of grown crystal. The thermal stability of the grown crystal has been determined using the thermogravimetric analysis.