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Purcell Effect and ...
Purcell Effect and Nonlinear Behavior of the Emission in a Periodic Structure Composed of InAs Monolayers Embedded in a GaAs Matrix
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- Pozina, Galia (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Girshova, Elizaveta I. (författare)
- St Petersburg Acad Univ, Russia; ITMO Univ, Russia
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- Morozov, Konstantin M. (författare)
- St Petersburg Acad Univ, Russia; ITMO Univ, Russia
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- Ivanov, Konstantin A. (författare)
- ITMO Univ, Russia
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- Egorov, Anton Yu. (författare)
- ITMO Univ, Russia
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- Kaliteevski, Mikhail A. (författare)
- St Petersburg Acad Univ, Russia; ITMO Univ, Russia; Russian Acad Sci, Russia
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(creator_code:org_t)
- 2018-12-28
- 2019
- Engelska.
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Ingår i: Annalen der Physik. - : WILEY-V C H VERLAG GMBH. - 0003-3804 .- 1521-3889. ; 531:6
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Nyckelord
- Bragg conditions; monolayer-thick InAs quantum wells; Purcell effect; super-radiance
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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