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Proceedings Paper

Nonresonant nonlinear optical response of chalcogenide thin films to picosecond pulses
Author(s): Raul Rangel-Rojo; Emmanuel Haro-Poniatowski; Antonio Munoz Flores
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Paper Abstract

We report the study of the third-order optical nonlinearities of amorphous selenium, using picosecond pulses at 1.064 micrometer, from a mode-locked Nd:YAG laser. The Z-scan technique was used to resolve the absorptive and refractive contributions to the nonlinear response of the material, including their sign. The chosen wavelength lies to the lower photon energy side from the absorption edge for the material studied, the interaction is therefore nonresonant and electronic in origin. We measured an n2 equals -0.06 cm2GW-1, with negligible two-photon absorption. We discuss the influence of two photon absorption on the nonlinearity observed.

Paper Details

Date Published: 5 February 1996
PDF: 4 pages
Proc. SPIE 2730, Second Iberoamerican Meeting on Optics, (5 February 1996); doi: 10.1117/12.231104
Show Author Affiliations
Raul Rangel-Rojo, Ctr. de Investigacion Cientifica y de Education Superior de Ensenada (Mexico)
Emmanuel Haro-Poniatowski, Univ. Autonoma Metropolitana (Mexico)
Antonio Munoz Flores, Univ. Autonoma Metropolitana (Mexico)


Published in SPIE Proceedings Vol. 2730:
Second Iberoamerican Meeting on Optics
Daniel Malacara-Hernandez; Sofia E. Acosta-Ortiz; Ramon Rodriguez-Vera; Zacarias Malacara; Arquimedes A. Morales, Editor(s)

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