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Ultrashort laser induced spatial redistribution of silver species and nano-patterning of etching selectivity in silver-containing glasses

Journal article
Authors Y. Petit
C. H. Park
J. M. Mok
Evgeniya O. Smetanina
B. Chimier
G. Duchateau
T. Cardinal
L. Canioni
S. H. Park
Published in Optics Express
Volume 27
Issue 10
Pages 13675-13680
ISSN 1094-4087
Publication year 2019
Published at Department of Physics (GU)
Pages 13675-13680
Language en
Links dx.doi.org/10.1364/oe.27.013675
Keywords induced photochemistry, irradiation, Optics
Subject categories Physical Sciences

Abstract

Femtosecond laser-induced spatial redistribution of silver species (ions, clusters. and hole centers) in a silver-containing phosphate glass is investigated by correlative means of near-field scanning optical microscopy (NSOM) images, numerical simulations, chemical micro-probe analysis. and nanoscale spatial profiles after soft etching. In particular, we found that the chemical etching selectivity for nanoscale patterning is strongly dependent upon the irradiation of femtosecond laser due to the spatial redistribution of silver species within the affected area. These results strongly indicate that controlling the distribution of silver species by femtosecond laser irradiation may open new routes for surface nanoscale chemical and/or spatial patterning for the fabrication of 2D surface photonic crystals. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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