Studies on the Structural, Thermal, Fluorescence and Linear-Non-linear Optical Properties of Glycine Sodium Acetate Single Crystal for Electro-Optic Device Applications

In the present communication, glycine sodium acetate (GSA) single crystal is grown by the slow evaporation method at room temperature. The cell parameters are confirmed by powder X-ray diffraction technique. This research paper focuses on structural, thermal, second harmonic generation, photolumines-cence, linear and non-linear optical properties of glycine sodium acetate single crystals. The Kurtz-Perry powder technique confirmed the second harmonic generation efficiency of the grown crystal is 1.7 times more than that of the standard potassium dihydrogen phosphate (KDP) crystal. The high optical transparency (88 %) of the grown crystal is determined by employing UV-visible studies. The optical band gap of grown crystal is found to be 5.12 eV. The transmittance data is used to evaluate the potential optical constants viz. optical conductivity, refractive index, extinction coefficient and complex dielectric constant. The different functional groups are identified using Fourier transform infrared (FT-IR) spectral analysis. The thermal stability of the grown crystal is found to be 176 degrees C by means of thermo gravimetric analysis. The presence of sodium element is also confirmed by atomic absorption spectroscopy technique. The photoluminescence study of grown crystal is investigated in the range of 300-900 nm and confirms the near infrared emission in the electromagnetic spectrum