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Spectral and coherence signatures of threshold in random lasers

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dc.contributor.authorWan Zakiah Wan Ismailen_US
dc.contributor.authorLiu, DMen_US
dc.contributor.authorClement, Sen_US
dc.contributor.authorCoutts, DWen_US
dc.contributor.authorGoldys, EMen_US
dc.contributor.authorDawes, JMen_US
dc.date.accessioned2024-05-29T03:00:48Z
dc.date.available2024-05-29T03:00:48Z
dc.date.issued2014
dc.description.abstractWe investigated the spectral and coherence signatures of threshold in random lasers with incoherent feedback consisting of alumina colloidal nanoparticles suspended in rhodamine 6G methanol solution under nanosecond-pulsewidth pumping, based on measurement of temporal and spatial coherence properties and comparison with emission spectra. Feedback in this random laser was provided by multiple scattering from the alumina particles, and the effects of particle concentration and scattering length were studied for the weakly scattering and diffusive scattering regimes. At threshold, in each regime, the visibility of the interference fringes jumped abruptly, coinciding with a substantial increase in peak emission intensity and decrease in the linewidth of a single dominant emission peak.
dc.identifier.doi10.1088/2040-8978/16/10/105008
dc.identifier.issn2040-8978
dc.identifier.issue10
dc.identifier.scopusWOS:000343665200012
dc.identifier.urihttps://oarep.usim.edu.my/handle/123456789/11799
dc.identifier.volume16
dc.languageEnglish
dc.language.isoen_USen_US
dc.publisherIOP Publishing Ltden_US
dc.relation.ispartofJournal Of Optics
dc.sourceWeb Of Science (ISI)
dc.subjectrandom lasersen_US
dc.subjectlasing thresholden_US
dc.subjectemission spectraen_US
dc.subjectcoherence propertiesen_US
dc.titleSpectral and coherence signatures of threshold in random lasersen_US
dc.typeArticleen_US
dspace.entity.typePublication

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