Effect of Swift Heavy Ion Irradiation on Coumarine Doped Glycene Zinc Sulphate (GZS) Semi Organic Crystals for Laser Applications

Nonlinear optical (NLO) crystals have come upon the materials science scene and are being studied by many research groups around the world. Most irradiation studies in the hydrogen bonded have been concentrated on the transient defects induced by ionizing radiation such as UV light, where the defects are closely related to the optical properties. Glycene Zinc Sulphate (GZS) Semi organic single crystals of were synthesized by a slow evaporation technique. Single crystal and powder XRD analyses confirmed the orthorhombic crystal structure. On the other hand, ion beam irradiation effects have rarely been studied. Li irradiations lead to the development of a well-defined surface H peak in dye doped GZS crystals. Due to beam interaction, electron moves to the conduction band leaving behind the free hole, which can get self–trapped and configurationally changes occurring in the neighboring structural units. Irradiation effects diffuse the dyes uniformly in the crystal due to lattice disorder. The structural, chemical, optical, mechanical and non-linear optical properties of the doped crystals were analyzed with the characterization studies such as powder XRD, FT-IR, UV-Visible, SEM and SHG measurements respectively. The results for doped GZS crystal are compared with the results of the pure GZS crystals.The TGA, DTA shows that the material has good thermal stability; the UV-Vis spectrum shows the transmitting ability of the crystal in the entire visible region. The dielectric constant and dielectric loss were calculated by varying frequencies at different temperature. The microhardness test reveals that the crystals possess good mechanical strength.