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

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5 Author(s)
Galstyan, T.V. ; Centre d''Opt., Photonique et Laser, Laval Univ., Que., Canada ; Viens, J.F. ; Villeneuve, A. ; Richardson, K.
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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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Lightwave Technology, Journal of  (Volume:15 ,  Issue: 8 )