Photoinduced mass-transport based holographic recording of surface relief gratings in amorphous selenium films

M. L. Trunov, P. M. Lytvyn, S. N. Yannopoulos, I. A. Szabo, S. Kökényesi

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Surface relief gratings formation in amorphous selenium thin films in two recording configurations with light intensity modulation were studied in situ by real-time atomic force microscopy and diffraction efficiency measurements. We report observation of mass transport effect in films induced by band-gap irradiation when the light polarization of the recording beams has a component along the light intensity gradient (p-p scheme of recording) that allows obtaining giant stable gratings in this versatile chalcogenide material. On the contrary, only a pure scalar weak grating caused by photoinduced volume shrinkage is obtained in the s-s recording configuration, even for long-term irradiation.

Original languageEnglish
Article number051906
JournalApplied Physics Letters
Issue number5
Publication statusPublished - Aug 1 2011


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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