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Keitel, R.C.* ; Aellen, M.* ; Feber, B.L.* ; Rossinelli, A.A.* ; Meyer, S.A.* ; Cui, J. ; Norris, D.J.*

Active mode switching in plasmonic microlasers by spatial control of optical gain.

Nano Lett. 21, 8952–8959 (2021)
DOI PMC
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
The pursuit of miniaturized optical sources for on-chip applications has led to the development of surface plasmon polariton lasers (plasmonic lasers). While applications in spectroscopy and information technology would greatly benefit from the facile and active tuning of the output wavelength from such devices, this topic remains underexplored. Here, we demonstrate optically controlled switching between predefined wavelengths within a plasmonic microlaser. After fabricating Fabry-Pérot plasmonic cavities that consist of two curved block reflectors on an ultrasmooth flat Ag surface, we deposit a thin film of CdSe/CdxZn1-xS/ZnS colloidal core/shell/shell nanoplatelets (NPLs) as the gain medium. Our cavity geometry allows the spatial and energetic separation of transverse modes. By spatially modulating the gain profile within this device, we demonstrate active selection and switching between four transverse modes within a single plasmonic laser. The fast buildup and decay of the plasmonic modes promises picosecond switching times, given sufficiently rapid changes in the structured illumination.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Active Control ; Laser Cavity ; Plasmonic Laser ; Structured Illumination ; Surface Plasmon ; Transverse Modes; Laser; Enhancement; Emission
Sprache englisch
Veröffentlichungsjahr 2021
HGF-Berichtsjahr 2021
ISSN (print) / ISBN 1530-6984
e-ISSN 1530-6992
Zeitschrift Nano Letters
Quellenangaben Band: 21, Heft: 21, Seiten: 8952–8959 Artikelnummer: , Supplement: ,
Verlag American Chemical Society (ACS)
Verlagsort 1155 16th St, Nw, Washington, Dc 20036 Usa
Begutachtungsstatus Peer reviewed
Institut(e) Helmholtz Pioneer Campus (HPC)
POF Topic(s) 30205 - Bioengineering and Digital Health
Forschungsfeld(er) Pioneer Campus
PSP-Element(e) G-510006-001
Förderungen European Research Council under the European Union's Seventh Framework Program (FP/2007-2013)/ERC Grant
DOI 10.1021/acs.nanolett.1c01957
WOS ID WOS:000718298700002
Scopus ID 85119154187
PubMed ID 34723554
Erfassungsdatum 2021-12-03
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