Search results for "Photodarkening"

showing 2 items of 2 documents

Photosensitivity and second harmonic generation in chalcogenide arsenic sulfide poled glasses

2011

International audience; The present work investigates the photoinduced Second Harmonic Generation processes in thermally poled arsenic sulfide glasses. SHG Maker fringes patterns associated to SHG kinetic measurements about illumination and Raman spectroscopy have been conducted in order to bring new information which confirm the combined influence of charge carriers and mid-range glass structural modification on the poling and the photodarkening mechanisms.

Materials scienceChalcogenide02 engineering and technologySulfides01 natural sciences010309 opticsCondensed Matter::Materials Sciencesymbols.namesakechemistry.chemical_compoundOpticsPhotosensitivity0103 physical sciencesbusiness.industryGlassesChalcogenidePolingSecond-harmonic generation[CHIM.MATE]Chemical Sciences/Material chemistry021001 nanoscience & nanotechnologyElectronic Optical and Magnetic Materialschemistry[ CHIM.MATE ] Chemical Sciences/Material chemistryPhotodarkeningsymbolsOptoelectronicsArsenic sulfideCharge carrier0210 nano-technologybusinessRaman spectroscopy
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<title>Holographic recording in amorphous chalcogenide semiconductor thin films</title>

2000

ABSTRACT The photoinduced changes ofoptical properties and holographic recording in amorphous chalcogenide semiconductor As-S- Se and As2S3 thin films have been studied. The possibilities of the practical applications of these materials as the photoresists for the production of the relief holograms and holographic optical elements are discussed. It is shown that theself-enhancement phenomenon of holographic recording in amorphous chalcogenide semiconductor films by light orthermal treatment can be used to increase the diffraction efficiency ofthe holograms.Keywords: chalcogenide semiconductors, amorphous films, photoresists, photoinduced processes, relaxation processes,self-enhancement of h…

Materials sciencebusiness.industryChalcogenideDopingAmorphous solidchemistry.chemical_compoundOpticsSemiconductorAbsorption edgechemistryPhotodarkeningOptoelectronicsThin filmbusinessRefractive indexSPIE Proceedings
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