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Experimental Study of Spontaneous Emission in Bragg Multiple- Quantum-Well Structures with InAs Single-Layer Quantum Wells
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 Natl Res Acad Univ, Russia; Ioffe Inst, Russia; ITMO Univ, Russia.
St Petersburg Natl Res Acad Univ, Russia; Ioffe Inst, Russia.
St Petersburg Natl Res Acad Univ, Russia; ITMO Univ, Russia.
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2018 (English)In: Semiconductors (Woodbury, N.Y.), ISSN 1063-7826, E-ISSN 1090-6479, Vol. 52, no 7, p. 877-880Article in journal (Refereed) Published
Abstract [en]

The time-resolved photoluminescence of a Bragg structure formed by InAs single-layer quantum wells in a GaAs matrix is investigated experimentally. The comparison of photoluminescence spectra recorded from the edge and the surface of the sample indicates that Bragg ordering of the quantum wells leads to substantial modification of the spectra, in particular, to the appearance of additional modes. The spectrum recorded at the edge of the sample features a single line corresponding to the exciton ground state. In the spectrum recorded at the surface, an additional line whose frequency and propagation angle correspond to the Bragg condition for quantum wells, appears at high excitation levels. The calculation of the modal Purcell factor explains the fact that spontaneous emission is enhanced only for specific propagation angles and frequencies, rather than for all angles and frequencies satisfying the Bragg condition.

Place, publisher, year, edition, pages
PLEIADES PUBLISHING INC , 2018. Vol. 52, no 7, p. 877-880
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-149340DOI: 10.1134/S1063782618070187ISI: 000434719800011OAI: oai:DiVA.org:liu-149340DiVA, id: diva2:1229840
Note

Funding Agencies|Russian Science Foundation [16-12-10503]

Available from: 2018-07-02 Created: 2018-07-02 Last updated: 2018-07-02

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