Growth And Characterisation of A Semiorganic Non-Linear Optical Single Crystals

  • M. Selvapandiya Department of Physics, Periyar University, PG Extension center, Dharmapuri- 636 705
  • J. Arumugam Department of Physics, Sri Vidya Mandir Arts & Science College, Uthangarai- 636 902
Keywords: slow evaporation, nonlinear optical material, powder X-ray diffraction, microhardness


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 KDP crystal. Thus ZTS is a potential candidate for second order frequency conversion process. Single crystals of pure and magnesium chloride doped Zinc (tris) thiourea sulphate (ZTS) were grown from aqueous solution by slow evap oration technique at room temperature. The grown crystals were subjected to powder X-raydiffraction, UV-Visible absorption, microhardness and second harmonic generation studies. The lattice cell parameters and structure of the grown crystals were determined from powder X-ray diffractionstudies. The grown crystals have lower cut-off wavelength about 279 and 294 nm has been studied through UV-Visible absorption spectra. The mechanical strength of the grown crystals was confirmed by Vicker’s microhardness test. The Kurtz powder technique was employed for confirmation of second harmonic generation.