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Article Dans Une Revue Optical Materials Année : 2015

Nonlinear optical properties of natural laccaic acid dye studied using Z-scan technique

S. Zongo
  • Fonction : Auteur
K Sanusi
  • Fonction : Auteur
J Britton
  • Fonction : Auteur
P Mthunzi
  • Fonction : Auteur
T Nyokong
  • Fonction : Auteur
M. Maaza
  • Fonction : Auteur
Bouchta Sahraoui

Résumé

We have investigated the nonlinear optical properties, including the optical limiting behaviour for five different concentrations of laccaic acid dye in solution and a thin film obtained through doping in poly (methyl methacrylate) (PMMA) polymer. The experiments were performed by using single beam Z-scan technique at 532 nm with 10 ns, 10 Hz Nd:YAG laser pulses excitation. From the open-aperture Z-scan data, we derived that the laccaic dye samples exhibit strong two photon absorption (2PA). The nonlinear refractive index was determined through the closed aperture Z-scan data. The estimated absorption coefficient β2, nonlinear refractive index n2 and second order hyperpolarizability γ were found to be of the order of 10−10 m/W, 10−9 esu and 10−32 esu, respectively. The Z-scan study reveals that the natural laccaic acid dye emerges as a promising material for third order nonlinear optical devices application.

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Dates et versions

hal-01391711 , version 1 (03-11-2016)

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S. Zongo, K Sanusi, J Britton, P Mthunzi, T Nyokong, et al.. Nonlinear optical properties of natural laccaic acid dye studied using Z-scan technique. Optical Materials, 2015, 46, pp.270-275. ⟨10.1016/j.optmat.2015.04.031⟩. ⟨hal-01391711⟩
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