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Opt Express. 2012 Jan 30;20(3):2824-31. doi: 10.1364/OE.20.002824.

Study of the photosensitivity of GeS binary glasses to 800 nm femtosecond pulses.

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1
Centre d’optique, photonique et laser (COPL), Université Laval, Québec G1V 0A6, Canada. Sandra.Messaddeq@copl.ulaval.ca

Abstract

We present the first study of the photosensitivity of GeS binary glasses in response to irradiation to femtosecond pulses at 800 nm. A maximum positive refractive index change of 3.5x10(-3) is demonstrated with the possibility to control the waveguide diameter from ~8 to ~50 µm by adjusting the input pulse energy. It is also demonstrated that under different exposure conditions, a maximum negative index change of -7.5x10(-3) can be reached. The present results clearly illustrate the potential of this family of glasses for the fabrication of mid-infrared waveguides.

PMID:
22330518
[Indexed for MEDLINE]
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