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Proceedings Paper

Polarization-dependent photoinduced surface microgratings in amorphous chalcogenide glasses
Author(s): Ali Saliminia; Tigran V. Galstian; Alain Villeneuve; Kathleen A. Richardson; Amy G. Graham; Cedric Lopez; Sudipta Seal; D. K. Verma; Alfons Schulte
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Paper Abstract

Recently, the chalcogenide glasses (ChG) have attracted much attention in the field of optical communication and integrated optics. High transparency in the infrared spectral region, low phonon energy, high nonlinear properties, and high photosensitivity at near band-gap (Eg 2.35 eV, a 1-2 x iO cm1 at 5 14 nm) are important characteristics of these glasses. In particular, the photosensitive effects, among them photodarkening and giant photoexpansion (2-5%) [1], have been extensively studied and several holographic elements, such as microlenses, diffraction and Bragg gratings, and channel waveguides have been realized in fiber, bulk, and thin film forms of these materials [2-4]. In this work, we report for the first time to our knowledge, the observation and study of the strong polarization dependent photoinduced surface relief gratings in As2S3 thin films. A model to describe the observed phenomena is also presented.

Paper Details

Date Published: 15 December 2000
PDF: 2 pages
Proc. SPIE 4087, Applications of Photonic Technology 4, (15 December 2000); doi: 10.1117/12.406299
Show Author Affiliations
Ali Saliminia, Univ. Laval (Canada)
Tigran V. Galstian, Univ. Laval (Canada)
Alain Villeneuve, Univ. Laval (Canada)
Kathleen A. Richardson, Univ. of Central Florida (United States)
Amy G. Graham, Univ. of Central Florida (United States)
Cedric Lopez, Univ. of Central Florida (United States)
Sudipta Seal, Univ. of Central Florida (United States)
D. K. Verma, Univ. of Central Florida (United States)
Alfons Schulte, Univ. of Central Florida (United States)

Published in SPIE Proceedings Vol. 4087:
Applications of Photonic Technology 4
Roger A. Lessard; George A. Lampropoulos, Editor(s)

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