Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5635
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dc.contributorDepartment of Applied Physics-
dc.creatorZhang, WF-
dc.creatorTang, L-
dc.creatorYu, SF-
dc.creatorLau, SP-
dc.date.accessioned2014-12-11T08:28:52Z-
dc.date.available2014-12-11T08:28:52Z-
dc.identifier.issn2159-3930 (eISSN)-
dc.identifier.urihttp://hdl.handle.net/10397/5635-
dc.language.isoenen_US
dc.publisherOptical Society of Americaen_US
dc.rights© 2012 Optical Society of America. This paper was published in Optical Materials Express 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: http://www.opticsinfobase.org/ome/abstract.cfm?uri=ol-2-4-490. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.en_US
dc.subjectCarbonen_US
dc.subjectEmission spectroscopyen_US
dc.subjectSpontaneous emissionen_US
dc.titleObservation of white-light amplified spontaneous emission from carbon nanodots under laser excitationen_US
dc.typeJournal/Magazine Articleen_US
dc.description.otherinformationAuthor name used in this publication: Li Bin Tangen_US
dc.description.otherinformationAuthor name used in this publication: Siu Fung Yuen_US
dc.description.otherinformationAuthor name used in this publication: Shu Ping Lauen_US
dc.identifier.spage490-
dc.identifier.epage495-
dc.identifier.volume2-
dc.identifier.issue4-
dc.identifier.doi10.1364/OME.2.000490-
dcterms.abstractA conventional laser irradiation method is applied to fabricate carbon nanodots (C-dots). By uniformly dispersing the C-dots into NMethylpyrrolidone (NMP) solution, white-light amplified spontaneous emission can be observed from the mixture under laser excitation at 266 nm. Peak wavelength and linewidth of the emission spectra are found to be around 450 and 120 nm respectively. It is verified that the presence of NMP enhances the emission efficiency of C-dots over the broad emission spectrum. This is because the excitation energy, which is not absorbed by the C-dots, is captured by the NMP and is subsequently transferred to the Cdots. Optical gain per peak power of the mixture at ~450 nm is found to be ~64 cm⁻¹MW⁻¹, which is about 39% higher than that without the use of NMP.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationOptical materials express, 1 Apr. 2012, v. 2, no. 4, p. 490-495-
dcterms.isPartOfOptical materials express-
dcterms.issued2012-04-01-
dc.identifier.isiWOS:000302957100016-
dc.identifier.scopus2-s2.0-84862148469-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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