Please use this identifier to cite or link to this item: doi:10.22028/D291-24269
Title: Analysis of the topography of a Bragg grating in chalcogenide glass
Author(s): Messaddeq, Sandra H.
Siu Li, M.
Messaddeq, Younes
Werner, Ulf
Lezal, D.
Aegerter, Michel A.
Language: English
Year of Publication: 2001
OPUS Source: Applied surface science. - 181. 2001, S. 19-27
SWD key words: Topographie
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: Relief Bragg gratings were recorded on the surface of Ga-Ge-S glass samples by interference of two UV laser beams at 351nm. Scanning force microscopy was used to perform a 3D image analysis of the resulting surface topography, which shows the superposition of an imprinted grating over the base topography of the glass. An important question regarding the efficiency of the grating is to determine to what extent the base topography reduces the intended coherent scattering of the grating because of its stochastic character. To answer this question we separated both base and gratings structures by Fourier filtering, examined both spatial frequency and roughness, and determined the correlation.
Link to this record: urn:nbn:de:bsz:291-scidok-25155
Date of registration: 15-Dec-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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