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Light-induced effects in amorphous chalcogenide glasses:femtoseconds to seconds

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dc.contributor.author Khan, Pritam
dc.contributor.author Adarsh, K.V.
dc.date.accessioned 2021-07-12T11:57:22Z
dc.date.available 2021-07-12T11:57:22Z
dc.date.issued 2021
dc.identifier.uri http://hdl.handle.net/10344/10332
dc.description peer-reviewed en_US
dc.description.abstract Amorphous chalcogenide glasses are intrinsically metastable, highly photosensitive, and therefore exhibit numerous light-induced effects upon bandgap and sub-bandgap illumination. Depending on the pulse duration of the excitation laser, ChGs exhibit a series of light-induced effects spanning over femtosecond to seconds time domain. For continuous wave (CW) illumination, the effects are dominantly metastable in terms of photodarkening (PD) and photobleaching (PB) that take place via homopolar to heteropolar bond conversion. On the other hand, under nanosecond and ultrafast pulsed illumination, ChGs exhibit transient absorption (TA) that is instigated from the transient bonding rearrangements through self-trapped exciton recombination. In the first part of the review, we pay special attention to continuous wave light-induced PD and PB, while in the second part we will focus on the TA and controlling such effects via internal and external parameters, e.g., chemical composition, temperature, sample history, etc. en_US
dc.language.iso eng en_US
dc.publisher MDPI en_US
dc.relation.ispartofseries Physics;3,pp. 253-274
dc.subject chalcogenide glasses en_US
dc.subject pump-probe en_US
dc.subject photodarkening en_US
dc.subject photobleaching en_US
dc.subject transient absorption en_US
dc.subject network rigidity en_US
dc.title Light-induced effects in amorphous chalcogenide glasses:femtoseconds to seconds en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.3390/physics3020019
dc.contributor.sponsor Science and Engineering Research Board en_US
dc.contributor.sponsor Council of Scientific and Industrial Research, India en_US
dc.relation.projectid EMR/2016/002520 en_US
dc.relation.projectid 03 (1250)/12/EMR II) en_US
dc.relation.projectid 37(3)/ 14/26/2016-BRNS/37245) en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US


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