Using the slow solvent evaporation method with deionized water as the solvent, a single crystal of glycine potassium iodide (GPI) was grown at room temperature. The GPI crystal belongs with space group Cc to the monoclinic system. Functional groups present in the sample were identified by FTIR spectral analysis. The crystals were further characterized by UV-Vis NIR transmission spectrum in the range of 250–1100 nm. Second Harmonic Generation was validated in the Kurtz-Perry powder technique. The Z-scan experiment was being used to assess the nonlinear absorption coefficient, nonlinear refractive index and third-order nonlinear susceptibility to explore GPI crystal third-order NLO behavior. The photoconductivity study confirms the grown crystal is positive photoconductivity. The grown crystal suitability for nonlinear optical applications was confirmed through characterization studies.

使用以去离子水为溶剂的缓慢溶剂蒸发法，在室温下生长单晶甘氨酸碘化钾（GPI）。GPI 晶体属于单斜晶系，空间群为 Cc。样品中存在的官能团通过 FTIR 光谱分析进行鉴定。通过在 250-1100 nm 范围内的 UV-Vis NIR 透射光谱进一步表征晶体。二次谐波发生在 Kurtz-Perry 粉末技术中得到验证。Z 扫描实验用于评估非线性吸收系数、非线性折射率和三阶非线性磁化率，以探索 GPI 晶体三阶 NLO 行为。光电导性研究证实生长的晶体具有正光电导性。