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Investigation of third order optical nonlinearity and optical limiting effect of Xylidine Ponceau dye in liquid medium by Z-Scan technique

U. MAJITHA PARVIN1, M.BASHEER AHAMED1,*

Affiliation

  1. B.S. Abdur Rahman University, Chennai-600 048, India

Abstract

Third order optical nonlinearity of Xylidine Ponceau dye in ethanol solvent was studied using pulsed Nd:YAG laser operating at 532nm as the source of excitation. The nonlinear optical response and optical limiting behavior of the dye were studied using single beam Z-scan technique. The open aperture Z-scan of the dye exhibited reverse saturable absorption. The closed aperture Z-scan of the dye exhibited negative nonlinearity. The nonlinear refractive index n2, nonlinear absorption coefficient β and third order nonlinear optical susceptibility χ(3) were evaluated for different concentrations of the dye in ethanol solvent. The nonlinear refractive index and nonlinear absorption were found to vary with concentration. Optical limiting characteristics of the dye at various concentrations in solution were also studied. From the results obtained, it is found that this dye has potential application in nonlinear optics..

Keywords

Z-scan, Xylidine Ponceau, NLO properties, optical limiting.

Submitted at: Aug. 13, 2014
Accepted at: Sept. 11, 2014

Citation

U. MAJITHA PARVIN, M.BASHEER AHAMED, Investigation of third order optical nonlinearity and optical limiting effect of Xylidine Ponceau dye in liquid medium by Z-Scan technique, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 9-10, pp. 1088-1092 (2014)