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dc.contributor.authorGrepstad, Jon Olav
dc.contributor.authorSkaar, Johannes
dc.date.accessioned2019-10-09T06:33:51Z
dc.date.available2019-10-09T06:33:51Z
dc.date.created2011-12-08T09:20:12Z
dc.date.issued2011
dc.identifier.citationOptics Express. 2011, 19 (22), 21404-21418.nb_NO
dc.identifier.issn1094-4087
dc.identifier.urihttp://hdl.handle.net/11250/2621040
dc.description.abstractTotal internal reflection occurs for large angles of incidence, when light is incident from a high-refractive-index medium onto a low-index medium. We consider the situation where the low-index medium is active. By invoking causality in its most fundamental form, we argue that evanescent gain may or may not appear, depending on the analytic and global properties of the permittivity function. For conventional, weak gain media, we show that there is an absolute instability associated with infinite transverse dimensions. This instability can be ignored or eliminated in certain cases, for which evanescent gain prevails.nb_NO
dc.language.isoengnb_NO
dc.publisherOSA Publishingnb_NO
dc.titleTotal internal reflection and evanescent gainnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber21404-21418nb_NO
dc.source.volume19nb_NO
dc.source.journalOptics Expressnb_NO
dc.source.issue22nb_NO
dc.identifier.doi10.1364/OE.19.021404
dc.identifier.cristin865347
dc.description.localcodeOpen Access/Åpen tilgangnb_NO
cristin.unitcode194,63,35,0
cristin.unitnameInstitutt for elektroniske systemer
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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