Study of nonlinear optics property of amino acid / Estudo de propriedades ópticas não lineares de aminoácidos

AUTOR(ES)
DATA DE PUBLICAÇÃO

2003

RESUMO

In this work we have studied nonlinear optical properties of amino acids using femtosecond laser pulses. The nonlinear index of refraction (nz) of L-alanine, L-proline, L-serine, L-threonine and L-arginine in aqueous solution have been determined. Also, the influence of pH in the magnitude of nz of amino acids in solution has been studied. Besides, we have determined the n;, dispersion in the three main axis, x, y and z, in L-threonine crystals. The amino acids have attracted a great deal of attention due to their good second-order optical properties. However, their third-order optical properties had not been established yet. Furthermore, we have implemented the hyper-Rayleigh scattering technique to determine the first hyperpolarizability (P) of organic molecules, leading to fast and more precise measurements. It was found the P value of some porphyrins and organic dyes.

ASSUNTO(S)

crescimento de cristais amino acid aminoácidos Óptica crystal growth nonlinear optics Óptica não linear optics

ACESSO AO ARTIGO

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