Accurate description of the light self-diffraction on high-modulated dynamic gratings in semiconductor materials

Mariana Petris; Valentin I. Vlad; Letitia Voicu; Raluca A. Negres

doi:10.1117/12.203548

8 March 1995 Accurate description of the light self-diffraction on high modulated dynamic gratings in semiconductor materials

Mariana Petris, Valentin I. Vlad, Letitia Voicu, Raluca A. Negres

Author Affiliations +

Proceedings Volume 2461, ROMOPTO '94: Fourth Conference in Optics; (1995) https://doi.org/10.1117/12.203548
Event: ROMOPTO '94: 4th Conference on Optics, 1994, Bucharest, Romania

Abstract

The light self-diffraction in the case of the high modulated phase gratings induced in semiconductor materials is studied by solving numerically the set of the coupled wave equations, which were used previously for gratings produced by linear phenomena. We have extended this formalism to include the case of the absorbing materials and the nonuniformity of the interfering laser beams, which induce the gratings. Finally, we compare this description with our experimental data obtained in the self-diffraction on the phase gratings induced in crystalline silicon wafers by Nd:YAG laser beams. The experimental results are fitting better our theoretical description.

Citation Download Citation

Mariana Petris, Valentin I. Vlad, Letitia Voicu, and Raluca A. Negres "Accurate description of the light self-diffraction on high modulated dynamic gratings in semiconductor materials", Proc. SPIE 2461, ROMOPTO '94: Fourth Conference in Optics, (8 March 1995); https://doi.org/10.1117/12.203548

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