Modes of random lasers

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Show simple item record Andreasen, J en_US Asatryan, Ara en_US Botten, Lindsay en_US Byrne, M en_US Cao, H en_US Ge, L en_US Labonte, L en_US Sebbah, P en_US Stone, A en_US T??Reci, H en_US Vanneste, C en_US
dc.contributor.editor en_US 2012-10-12T03:32:54Z 2012-10-12T03:32:54Z 2011 en_US
dc.identifier 2010000357 en_US
dc.identifier.citation Andreasen J et al. 2011, 'Modes of random lasers', Optical Society of America, vol. 3, no. 1, pp. 88-127. en_US
dc.identifier.issn 1943-8206 en_US
dc.identifier.other C1 en_US
dc.description.abstract In conventional lasers, the optical cavity that confines the photons also determines essential characteristics of the lasing modes such as wavelength, emission pattern, directivity, and polarization. In random lasers, which do not have mirrors or a well-defined cavity, light is confined within the gain medium by means of multiple scattering. The sharp peaks in the emission spectra of semiconductor powders, first observed in 1999, has therefore lead to an intense debate about the nature of the lasing modes in these so-called lasers with resonant feedback. We review numerical and theoretical studies aimed at clarifying the nature of the lasing modes in disordered scattering systems with gain. The past decade has witnessed the emergence of the idea that even the low-Q resonances of such open systems could play a role similar to the cavity modes of a conventional laser and produce sharp lasing peaks. We focus here on the near-threshold single-mode lasing regime where nonlinear effects associated with gain saturation and mode competition can be neglected. We discuss in particular the link between random laser modes near threshold and the resonances or quasi-bound (QB) states of the passive system without gain. For random lasers in the localized (strong scattering) regime, QB states and threshold lasing modes were found to be nearly identical within the scattering medium. en_US
dc.language en_US
dc.publisher Optical Society of America en_US
dc.relation.isbasedon en_US
dc.rights This paper was published in Advances in Optics and Photonics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: . Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
dc.title Modes of random lasers en_US
dc.parent Advances in Optics and Photonics en_US
dc.journal.volume 3 en_US
dc.journal.number 1 en_US
dc.publocation USA en_US
dc.identifier.startpage 88 en_US
dc.identifier.endpage 127 en_US SCI.Mathematical Sciences en_US
dc.conference Verified OK en_US
dc.for 020500 en_US
dc.personcode 0000065068 en_US
dc.personcode 010655 en_US
dc.personcode 780055 en_US
dc.personcode 0000065076 en_US
dc.personcode 0000028731 en_US
dc.personcode 0000065070 en_US
dc.personcode 0000065071 en_US
dc.personcode 0000065072 en_US
dc.personcode 0000065073 en_US
dc.personcode 0000065074 en_US
dc.personcode 0000065075 en_US
dc.percentage 100 en_US Optical Physics en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US
dc.location.activity en_US
dc.description.keywords lasers, random, mode, en_US

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