Purcell Effect and Nonlinear Behavior of the Emission in a Periodic Structure Composed of InAs Monolayers Embedded in a GaAs Matrix

Pozina, Galia (author): Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten

Girshova, Elizaveta I. (author): St Petersburg Acad Univ, Russia; ITMO Univ, Russia

Morozov, Konstantin M. (author): St Petersburg Acad Univ, Russia; ITMO Univ, Russia

Kaliteevski, Mikhail A. (author): St Petersburg Acad Univ, Russia; ITMO Univ, Russia; Russian Acad Sci, Russia

(creator_code:org_t)

2018-12-28
2019
English.
In: Annalen der Physik. - : WILEY-V C H VERLAG GMBH. - 0003-3804 .- 1521-3889. ; 531:6

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Abstract Subject headings

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.

By the author/editor: Pozina, Galia; Girshova, Elizav ...; Morozov, Konstan ...; Ivanov, Konstant ...; Egorov, Anton Yu ...; Kaliteevski, Mik ...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Atom and Molecul ...

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