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Purcell Effect and Nonlinear Behavior of the Emission in a Periodic Structure Composed of InAs Monolayers Embedded in a GaAs Matrix
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-9840-7364
St Petersburg Acad Univ, Russia; ITMO Univ, Russia.
St Petersburg Acad Univ, Russia; ITMO Univ, Russia.
ITMO Univ, Russia.
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2019 (English)In: Annalen der Physik, ISSN 0003-3804, E-ISSN 1521-3889, Vol. 531, no 6, article id 1800388Article in journal (Refereed) Published
Abstract [en]

Enhancement of spontaneous emission in a resonant Bragg quantum well (QW) structure with 60 periods of triple InAs monolayers embedded in a GaAs matrix is studied experimentally and theoretically. From measurements of the time-resolved photoluminescence, besides the QW exciton at 1.47 eV, a specific super-radiant (SR) emission demonstrating nonlinear properties is found. The SR mode shows a near-quadratic dependence of intensity on excitation power, while its energy position follows the Bragg condition. It is revealed that the SR mode shows a peculiar non-monotonic dependence of intensity on direction, with a maximum observed at approximately 40 degrees. The enhancement in the SR emission at a specific direction is correlated well with suggested theoretical consideration of the modal Purcell factor for periodic quantum well structures.

Place, publisher, year, edition, pages
WILEY-V C H VERLAG GMBH , 2019. Vol. 531, no 6, article id 1800388
Keywords [en]
Bragg conditions; monolayer-thick InAs quantum wells; Purcell effect; super-radiance
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:liu:diva-158883DOI: 10.1002/andp.201800388ISI: 000471714300007OAI: oai:DiVA.org:liu-158883DiVA, id: diva2:1337580
Conference
34th International Conference on the Physics of Semiconductors (ICPS)
Note

Funding Agencies|Swedish Energy Agency; Russian Science Foundation [16-12-10503]

Available from: 2019-07-16 Created: 2019-07-16 Last updated: 2019-07-16

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