Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/140189
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dc.contributor.authorSak, Mustafaen_US
dc.contributor.authorTaghipour, Nimaen_US
dc.contributor.authorDelikanli, Savasen_US
dc.contributor.authorShendre, Sushanten_US
dc.contributor.authorTanriover, Ibrahimen_US
dc.contributor.authorForoutan, Sinaen_US
dc.contributor.authorGao, Yuanen_US
dc.contributor.authorYu, Junhongen_US
dc.contributor.authorYanyan, Zhouen_US
dc.contributor.authorYoo, Seongwooen_US
dc.contributor.authorDang, Cuongen_US
dc.contributor.authorDemir, Hilmi Volkanen_US
dc.date.accessioned2020-05-27T05:13:31Z-
dc.date.available2020-05-27T05:13:31Z-
dc.date.issued2020-
dc.identifier.citationSak, M., Taghipour, N., Delikanli, S., Shendre, S., Tanriover, I., Foroutan, S., . . . Demir, H. V. (2020). Coreless fiber-based whispering-gallery-mode assisted lasing from colloidal quantum well solids. Advanced Functional Materials, 30(1), 1907417-. doi:10.1002/adfm.201907417en_US
dc.identifier.issn1616-301Xen_US
dc.identifier.urihttps://hdl.handle.net/10356/140189-
dc.description.abstractWhispering gallery mode (WGM) resonators are shown to hold great promise to achieve high-performance lasing using colloidal semiconductor nanocrystals (NCs) in solution phase. However, the low packing density of such colloidal gain media in the solution phase results in increased lasing thresholds and poor lasing stability in these WGM lasers. To address these issues, here optical gain in colloidal quantum wells (CQWs) is proposed and shown in the form of high-density close-packed solid films constructed around a coreless fiber incorporating the resulting whispering gallery modes to induce gain and waveguiding modes of the fiber to funnel and collect light. In this work, a practical method is presented to produce the first CQW-WGM laser using an optical fiber as the WGM cavity platform operating at low thresholds of ≈188 µJ cm−2 and ≈1.39 mJ cm−2 under one- and two-photon absorption pumped, respectively, accompanied with a record low waveguide loss coefficient of ≈7 cm−1 and a high net modal gain coefficient of ≈485 cm−1. The spectral characteristics of the proposed CQW-WGM resonator are supported with a numerical model of full electromagnetic solution. This unique CQW-WGM cavity architecture offers new opportunities to achieve simple high-performance optical resonators for colloidal lasers.en_US
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en_US
dc.description.sponsorshipASTAR (Agency for Sci., Tech. and Research, S’pore)en_US
dc.language.isoenen_US
dc.relation.ispartofAdvanced Functional Materialsen_US
dc.rightsThis is the accepted version of the following article: Sak, M., Taghipour, N., Delikanli, S., Shendre, S., Tanriover, I., Foroutan, S., . . ., Demir, H. V. (2020). Coreless fiber-based whispering-gallery-mode assisted lasing from colloidal quantum well solids. Advanced Functional Materials, 30(1), 1907417-., which has been published in final form at doi:10.1002/adfm.201907417. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy [https://authorservices.wiley.com/authorresources/Journal-Authors/licensing/self-archiving.html].en_US
dc.subjectEngineering::Electrical and electronic engineeringen_US
dc.titleCoreless fiber-based whispering-gallery-mode assisted lasing from colloidal quantum well solidsen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.contributor.organizationCentre of Excellence for Semiconductor Lighting and Displaysen_US
dc.contributor.organizationCentre of Optical Fiber Technologyen_US
dc.contributor.organizationThe Photonics Instituteen_US
dc.identifier.doi10.1002/adfm.201907417-
dc.description.versionAccepted versionen_US
dc.identifier.scopus2-s2.0-85074747378-
dc.identifier.issue1en_US
dc.identifier.volume30en_US
dc.subject.keywordsLaseren_US
dc.subject.keywordsNanoplateletsen_US
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item.grantfulltextopen-
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