Third order nonlinear optical constants of L-alaninium oxalate


  • Arun Kuzhivelil Joseph Sree Keral Varma College, Thrissur, Kerala, India
  • Jayalekshmi Sankaran CUSAT, Kochi, Kerala, India



The charge transfer complex crystal L-alaninium oxalate (LAO) is grown by slow evaporation at ambient temperature using equimolar solution of L-alanine and oxalic acid as precursors. The third order nonlinear optical constants of the thin cleaved LAO crystal is measured by single beam Z scan technique with and without aperture in the far field. The crystal shows reverse saturable absorption and negative nonlinear refraction under our experimental conditions. Nonlinear optical constants are calculated from the experimental data.

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Author Biographies

Arun Kuzhivelil Joseph, Sree Keral Varma College, Thrissur, Kerala, India

Researcher, Physics Department, CUSAT, Kochi-22, India 


Asst. Professor

Sree Keral Varma College, Thrissur, Kerala, India.

Jayalekshmi Sankaran, CUSAT, Kochi, Kerala, India

Professor & Head

Department of Physics

CUSAT, Kochi, Kerala, India




How to Cite

A. Kuzhivelil Joseph and J. Sankaran, “Third order nonlinear optical constants of L-alaninium oxalate”, Photonics Lett. Pol., vol. 7, no. 3, pp. pp. 81–83, Sep. 2015.