Coreless fiber‐based whispering‐gallery‐mode assisted lasing from colloidal quantum well solids

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buir.contributor.authorSak, Mustafa
buir.contributor.authorTaghipour, Nima
buir.contributor.authorDelikanlı, Savaş
buir.contributor.authorTanrıöver, İbrahim
buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.authorForoutan, Sina
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage1907417-8en_US
dc.citation.issueNumber1en_US
dc.citation.spage1907417-1en_US
dc.citation.volumeNumber30en_US
dc.contributor.authorSak, Mustafa
dc.contributor.authorTaghipour, Nima
dc.contributor.authorDelikanlı, Savaş
dc.contributor.authorShendre, S.
dc.contributor.authorTanrıöver, İbrahim
dc.contributor.authorGao, Y.
dc.contributor.authorYu, J.
dc.contributor.authorYanyan, Z.
dc.contributor.authorYoo, S.
dc.contributor.authorDang, C.
dc.contributor.authorDemir, Hilmi Volkan
dc.contributor.authorForoutan, Sina
dc.date.accessioned2021-02-28T17:29:39Z
dc.date.available2021-02-28T17:29:39Z
dc.date.issued2020-01
dc.departmentAdvanced Research Laboratories (ARL)en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentDepartment of Physicsen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
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.embargo.release2021-01-03
dc.identifier.doi10.1002/adfm.201907417en_US
dc.identifier.issn1616-301X
dc.identifier.urihttp://hdl.handle.net/11693/75644
dc.language.isoEnglishen_US
dc.publisherWiley-VCH Verlagen_US
dc.relation.isversionofhttps://dx.doi.org/10.1002/adfm.201907417en_US
dc.source.titleAdvanced Functional Materialsen_US
dc.subjectLaseren_US
dc.subjectNanoplateletsen_US
dc.subjectOptical gainen_US
dc.subjectWaveguidingen_US
dc.subjectWhispering‐gallery‐modeen_US
dc.titleCoreless fiber‐based whispering‐gallery‐mode assisted lasing from colloidal quantum well solidsen_US
dc.typeArticleen_US

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Department of Physics
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