Robust whispering-gallery-mode microbubble lasers from colloidal quantum dots

buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage2646en_US
dc.citation.issueNumber4en_US
dc.citation.spage2640en_US
dc.citation.volumeNumber17en_US
dc.contributor.authorWang Y.en_US
dc.contributor.authorTa, V. D.en_US
dc.contributor.authorLeck K.S.en_US
dc.contributor.authorTan, B. H. I.en_US
dc.contributor.authorWang, Z.en_US
dc.contributor.authorHe T.en_US
dc.contributor.authorOhl, C.-D.en_US
dc.contributor.authorDemir, Hilmi Volkanen_US
dc.contributor.authorSun, H.en_US
dc.date.accessioned2018-04-12T11:08:44Z
dc.date.available2018-04-12T11:08:44Z
dc.date.issued2017en_US
dc.departmentDepartment of Physicsen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractMicrolasers hold great promise for the development of photonics and optoelectronics. Among the discovered optical gain materials, colloidal quantum dots (CQDs) have been recognized as the most appealing candidate due to the facile emission tunability and solution processability. However, to date, it is still challenging to develop CQD-based microlasers with low cost yet high performance. Moreover, the poor long-term stability of CQDs remains to be the most critical issue, which may block their laser aspirations. Herein, we developed a unique but generic approach to forming a novel type of a whispering-gallery-mode (WGM) microbubble laser from the hybrid CQD/poly(methyl methacrylate) (PMMA) nanocomposites. The formation mechanism of the microbubbles was unraveled by recording the drying process of the nanocomposite droplets. Interestingly, these microbubbles naturally serve as the high-quality WGM laser resonators. By simply changing the CQDs, the lasing emission can be tuned across the whole visible spectral range. Importantly, these microbubble lasers exhibit unprecedented long-term stability (over one year), sufficient for practical applications. As a proof-of-concept, the potential of water vapor sensing was demonstrated. Our results represent a significant advance in microlasers based on the advantageous CQDs and may offer new possibilities for photonics and optoelectronics.en_US
dc.description.provenanceMade available in DSpace on 2018-04-12T11:08:44Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2017en
dc.identifier.doi10.1021/acs.nanolett.7b00447en_US
dc.identifier.issn1530-6984
dc.identifier.urihttp://hdl.handle.net/11693/37287
dc.language.isoEnglishen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1021/acs.nanolett.7b00447en_US
dc.source.titleNano Lettersen_US
dc.subjectMicrobubbleen_US
dc.subjectMicrolaseren_US
dc.subjectNanocompositesen_US
dc.subjectQuantum doten_US
dc.subjectWhispering-gallery-modeen_US
dc.titleRobust whispering-gallery-mode microbubble lasers from colloidal quantum dotsen_US
dc.typeArticleen_US

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