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Photoinduced self-developing relief gratings in thin film chalcogenide As2S3 glasses

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5 Author(s)
T. V. Galstyan ; Centre d'Opt., Photonique et Laser, Laval Univ., Que., Canada ; J. -F. Viens ; A. Villeneuve ; K. Richardson
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Experimental observation and study of light induced relief gratings in chalcogenide glasses is presented. Holographic exposure of the glass film by near bandgap light leads to a real-time periodic thickness self-expansion without further processing. The dynamics of surface modulation is not monotone with respect to the exposition. These modulations demonstrate a strong memory effect, but can be erased by heating near the glass transition temperature

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Journal of Lightwave Technology  (Volume:15 ,  Issue: 8 )