Low-threshold lasing from copper-doped CdSe colloidal quantum wells

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buir.contributor.authorDelikanlı, Savaş
buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage2100034-7en_US
dc.citation.issueNumber6en_US
dc.citation.spage2100034-1en_US
dc.citation.volumeNumber15en_US
dc.contributor.authorYu, J.
dc.contributor.authorSharma, M.
dc.contributor.authorLi, M.
dc.contributor.authorDelikanlı, Savaş
dc.contributor.authorSharma, A.
dc.contributor.authorTaimoor, M.
dc.contributor.authorAltintas, Y.
dc.contributor.authorMcBride, J. R.
dc.contributor.authorKusserow, T.
dc.contributor.authorSum, T.
dc.contributor.authorDemir, Hilmi Volkan
dc.date.accessioned2022-02-22T08:40:18Z
dc.date.available2022-02-22T08:40:18Z
dc.date.issued2021-05-04
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.abstractTransition metal doped colloidal nanomaterials (TMDCNMs) have recently attracted attention as promising nano-emitters due to dopant-induced properties. However, despite ample investigations on the steady-state and dynamic spectroscopy of TMDCNMs, experimental understandings of their performance in stimulated emission regimes are still elusive. Here, the optical gain properties of copper-doped CdSe colloidal quantum wells (CQWs) are systemically studied with a wide range of dopant concentration for the first time. This work demonstrates that the amplified spontaneous emission (ASE) threshold in copper-doped CQWs is a competing result between the biexciton formation, which is preferred to achieve population inversion, and the hole trapping which stymies the population inversion. An optimum amount of copper dopants enables the lowest ASE threshold of ≈7 µJ cm−2, about 8-fold reduction from that in undoped CQWs (≈58 µJ cm−2) under sub-nanosecond pulse excitation. Finally, a copper-doped CQW film embedded in a vertical cavity surface-emitting laser (VCSEL) structure yields an ultralow lasing threshold of 4.1 µJ cm−2. Exploiting optical gain from TMDCNMs may help to further boost the performance of colloidal-based lasers.en_US
dc.description.provenanceSubmitted by Esma Aytürk (esma.babayigit@bilkent.edu.tr) on 2022-02-22T08:40:18Z No. of bitstreams: 1 Low-Threshold _Lasing _from _Copper-Doped _CdSe _Colloidal _Quantum _Wells.pdf: 1082550 bytes, checksum: 6897ec3339934ca4eeff62955f2e33c3 (MD5)en
dc.description.provenanceMade available in DSpace on 2022-02-22T08:40:18Z (GMT). No. of bitstreams: 1 Low-Threshold _Lasing _from _Copper-Doped _CdSe _Colloidal _Quantum _Wells.pdf: 1082550 bytes, checksum: 6897ec3339934ca4eeff62955f2e33c3 (MD5) Previous issue date: 2021-05-04en
dc.embargo.release2022-05-04
dc.identifier.doi10.1002/lpor.202100034en_US
dc.identifier.eissn1863-8899
dc.identifier.issn1863-8880
dc.identifier.urihttp://hdl.handle.net/11693/77549
dc.language.isoEnglishen_US
dc.publisherWileyen_US
dc.relation.isversionofhttps://doi.org/10.1002/lpor.202100034en_US
dc.source.titleLaser & Photonics Reviewsen_US
dc.subjectAmplified spontaneous emissionen_US
dc.subjectColloidal quantum wellsen_US
dc.subjectCopper dopingen_US
dc.subjectLasingen_US
dc.subjectVertical cavity surface-emitting lasersen_US
dc.titleLow-threshold lasing from copper-doped CdSe colloidal quantum wellsen_US
dc.typeArticleen_US

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