Ultrahigh quality microlasers from controlled self-assembly of ultrathin colloidal semiconductor quantum wells

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buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage2200849-12en_US
dc.citation.issueNumber7
dc.citation.spage2200849-1
dc.citation.volumeNumber17
dc.contributor.authorThung, Yi Tian
dc.contributor.authorDuan, Rui
dc.contributor.authorDurmuşoğlu, Emek Göksu
dc.contributor.authorHe, Yichen
dc.contributor.authorXiao, Lian
dc.contributor.authorLee, Calvin Xiu Xian
dc.contributor.authorLew, Wen Siang
dc.contributor.authorZhang, Lin
dc.contributor.authorDemir, Hilmi Volkan
dc.contributor.authorSun, Handong
dc.date.accessioned2024-03-11T13:42:46Z
dc.date.available2024-03-11T13:42:46Z
dc.date.issued2023-03-09
dc.departmentDepartment of Electrical and Electronics Engineering
dc.departmentDepartment of Physics
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)
dc.description.abstractColloidal quantum wells (CQWs) have emerged as a promising class of gain material in various optical feedback configurations. This is due to their unique excitonic features arising from their 1D quantum confinement. However, existing methods for integrating CQW onto microresonators will cause low laser quality due to uneven CQW coating. To overcome this, the use of liquid-interface kinetically driven self-assembly is proposed to coat ultrathin, close-packed layers of colloidal CdSe/Cd1−xZnxS core/shell CQWs between 7 and 14 nm onto the surface of silica microsphere cavities. The fabricated CQW-whispering-gallery-mode microlasers possess a commendable high quality (Q) factor of 13 000 at room temperature. Stable single-mode lasing output is demonstrated through evanescent field coupling between a CQW-coated microsphere and a thin uncoated microfiber in a 2D-3D microcavity configuration. These promising results highlight the suitability of the liquid-interface kinetically driven self-assembly method for realizing ultrathin CQW-coated microlasers and its high compatibility for integrating colloidal nanocrystals onto complex 3D microstructures for future miniaturized colloidal optoelectronic and photonic applications.
dc.identifier.doi10.1002/lpor.202200849
dc.identifier.eissn1863-8899
dc.identifier.urihttps://hdl.handle.net/11693/114523
dc.language.isoen
dc.publisherWiley-VCH GmbH
dc.relation.isversionofhttps://doi.org/10.1002/lpor.202200849
dc.rightsCC BY 4.0 DEED (Attribution 4.0 International)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.source.titleLaser & Photonics Reviews
dc.subjectColloidal quantum wells
dc.subjectcolloidal semiconductor microlasers
dc.subjectself-assembly
dc.subjectwhispering-gallery-mode lasing
dc.titleUltrahigh quality microlasers from controlled self-assembly of ultrathin colloidal semiconductor quantum wells
dc.typeArticle

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Department of Electrical and Electronics Engineering
Department of Physics
Institute of Materials Science and Nanotechnology (UNAM)