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Spectroscopic investigation of organic phase matchable NLO active oxinium succinate single crystals

  • B Mohanbabu Department of Physics, Sri Shakthi Institute of Engineering and Technology, L & T Bypass Road, Coimbatore – 641 062, Tamil Nadu, India
  • R Bharathikannan Department of Physics, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore – 641 020, Tamil Nadu, India

Abstract

Electro-optic and nonlinear optical (NLO) material, Oxinium Succinate Single crystals of average dimensions 8x6x4 mm3 have been successfully grown by standard slow evaporation technique. The crystallinity of the grown crystals has been analyzed by X-ray diffraction (XRD) curve measurements. Fourier transform infrared (FT-IR) spectroscopic studies were also performed for the identification of different modes present in the compound. The UV-visible absorption and transmittance spectra were recorded for the grown crystal and optical band gap and optical constants are calculated. The relative second harmonic generation (SHG) efficiency was investigated by Kurtz and Perry technique to explore the NLO characteristics of the material. The relative SHG efficiency of the material is 24 times greater than that of KDP and 4 times higher than that of urea. The phase matching property of the crystal is studied through the SHG dependence of average particle sizes. The dielectric study shows that the dielectric constant decreases with increase in frequency. Thermo Gravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) studies have been carried out to analysis the thermal properties of grown crystals. The microhardness study was also carried out on the sample

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