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Investigation of third order nonlinear optical properties of meta-Nitroaniline single crystal

T. THILAK1,2, M. BASHEER AHAMED1,* , P. MURUGAKOOTHAN3

Affiliation

  1. Department of Physics, B. S. Abdur Rahman University, Chennai- 48, India
  2. Department of Physics, Sri Ramanujar Engineering College, Chennai- 48, India
  3. PG and Research Department of Physics, Pachaiyappa’s College,Chennai-30, India

Abstract

A nonlinear optical crystal of meta-Nitroaniline (m-NA) was grown by slow evaporation solution growth technique at room temperature using methanol as solvent. In this work, the structure, FTIR spectrum, transmittance spectrum, optical band gap, second harmonic generation efficiency were discussed and analysed in detail. Third order nonlinear optical studies were performed by using single beam Z-scan technique with continuous wave Nd: YAG laser. Closed aperture Z-scan studies reveal the negative nonlinearity in the crystals and open aperture Z-scan reveals the saturation absorption. The nonlinear parameters such as nonlinear refractive index n2, absorption coefficient β and nonlinear optical susceptibility χ (3) were evaluated for the m-Nitroaniline crystal..

Keywords

Non-linear optical material, Saturation absorption, Optical susceptibility.

Submitted at: Jan. 16, 2014
Accepted at: Sept. 11, 2014

Citation

T. THILAK, M. BASHEER AHAMED, P. MURUGAKOOTHAN, Investigation of third order nonlinear optical properties of meta-Nitroaniline single crystal, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 9-10, pp. 1026-1030 (2014)