Effect of cesium chloride on crystal growth, structural and optical properties of ZTS single crystals

  • Selvapandiyan M a Department of Physics, Periyar University PG Extension center, Dharmapuri- 636 705, Tamil Nadu, India
  • Arumugam J b Department of Physics, Sri Vidya Mandir Arts & Science College, Uthangarai- 636902, Tamil Nadu, India
Keywords: Slow evaporation, nonlinear optical material, Fourier transforms infrared, Single crystal X-ray diffraction


Zinc tris-thiourea sulphate (ZTS) is a well-known nonlinear optical semiorganic single crystal having 1.2 times second harmonic generation efficiency than that of potassium dihydrogen phosphate (KDP). Single crystals of pure and cesium chloride doped Zinc (tris) theorem sulphate (ZTS) were grown from aqueous solution
by slow evaporation technique. The grown crystals were subjected to single crystal Xray diffraction, FTIR, UV-Visible absorption and second harmonic generation studies. The lattice cell parameters and structure of the grown crystals were determined from single crystal X-ray diffraction studies. The presence of functional groups in the compound has been confirmed using FTIR spectra. The grown crystals have lower cutoff wavelength about 257 and 271 nm has been studied through UV-Visible transmission spectra. The Kurtz powder technique was employed for confirmation of second harmonic generation. The relative second harmonic generation efficiency of the grown pure and cesium doped crystal are 1.0 and 1.1 times higher than that of KDP crystals.