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A study on optical, dielectric and NLO properties of L-Alanine added ammonium dihydrogen phosphate single crystal

R. N. SHAIKH1, MOHD ANIS1, M. D. SHIRSAT2, S. S. HUSSAINI1,*

Affiliation

  1. Crystal Growth Laboratory, Department of Physics, Milliya Arts, Science and Management Science College, Beed431122, Maharashtra, India
  2. Intelligent Materials Research Laboratory, Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad-431004, Maharashtra, India

Abstract

In the present investigation the effects of amino acid L-Alanine on the, optical, dielectric and NLO properties of ammonium dihydrogen phosphate (ADP) crystal is reported. The crystal is grown by slow evaporation solution growth method at room temperature. The crystal structure was studied by powder X-ray diffraction. The chemical composition of the grown crystal was determined by fourier transform infrared spectroscopy (FT-IR).The optical transmission study reveals the improved transparency of doped crystal in the entire visible region, which is an essential requirement for NLO applications. The cutoff wavelength has been found to be 340 nm and the optical band gap is found to be 5.4eV. The dependence of extinction coefficient (K) and refractive index (n) on wavelength has also been reported. The dielectric studies show that the dielectric constant and dielectric loss decreases exponentially with frequency at room temperature. The nonlinear optical behavior of grown crystal was tested by Kurtz-powder technique..

Keywords

Nonlinear optical materials, SHG efficiency, Optical transparency, Dielectric constant.

Submitted at: Dec. 8, 2013
Accepted at: Sept. 11, 2014

Citation

R. N. SHAIKH, MOHD ANIS, M. D. SHIRSAT, S. S. HUSSAINI, A study on optical, dielectric and NLO properties of L-Alanine added ammonium dihydrogen phosphate single crystal, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 9-10, pp. 1147-1152 (2014)