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dc.contributor.authorGuzelturk, B.en_US
dc.contributor.authorKelestemur, Y.en_US
dc.contributor.authorOlutas, M.en_US
dc.contributor.authorDelikanli, S.en_US
dc.contributor.authorDemir, Hilmi Volkanen_US
dc.date.accessioned2015-07-28T12:05:14Z
dc.date.available2015-07-28T12:05:14Z
dc.date.issued2014-07en_US
dc.identifier.issn1936-0851
dc.identifier.urihttp://hdl.handle.net/11693/13226
dc.description.abstractColloidal nanoplatelets (NPLs) have recently emerged as favorable light-emitting materials, which also show great potential as optical gain media due to their remarkable optical properties. In this work, we systematically investigate the optical gain performance of CdSe core and CdSe/CdS core/crown NPLs having different CdS crown size with one- and two-photon absorption pumping. The core/crown NPLs exhibit enhanced gain performance as compared to the core-only NPLs due to increased absorption cross section and the efficient interexciton funneling, which is from the CdS crown to the CdSe core. One- and two-photon absorption pumped amplified spontaneous emission thresholds are found as low as 41 μJ/cm2 and 4.48 mJ/cm2 , respectively. These thresholds surpass the best reported optical gain performance of the state-of-the-art colloidal nanocrystals (i.e., quantum dots, nanorods,etc.) emitting in the same spectral range as the NPLs. Moreover, gain coefficient of the NPLs is measured as high as 650 cm 1 , which is 4-fold larger than the best reported gain coefficient of the colloidal quantum dots. Finally, we demonstrate a two-photon absorption pumped vertical cavity surface emitting laser of the NPLs with a lasing threshold as low as 2.49 mJ/cm2 . These excellent results are attributed to the superior properties of the NPLs as optical gain media.en_US
dc.language.isoEnglishen_US
dc.source.titleACS Nanoen_US
dc.relation.isversionofhttp://dx.doi.org/10.1021/nn5022296en_US
dc.subjectAmplified Spontaneous Emissionen_US
dc.subjectColloidal nanoplateletsen_US
dc.subjectVertical cavity surface-emitting Laseren_US
dc.subjectOptical gainen_US
dc.titleAmplified Spontaneous Emission and Lasing in Colloidal Nanoplateletsen_US
dc.typeArticleen_US
dc.departmentDepartment of Physicsen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.citation.spage6599en_US
dc.citation.epage6605en_US
dc.citation.volumeNumber8en_US
dc.citation.issueNumber7en_US
dc.identifier.doi10.1021/nn5022296en_US
dc.publisherAmerican Chemical Societyen_US
dc.contributor.bilkentauthorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112Xen_US


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