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

Pozina, GaliaLinköpings universitet,Tunnfilmsfysik,Tekniska fakulteten (författare)

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

Girshova, Elizaveta I.St Petersburg Acad Univ, Russia; ITMO Univ, Russia (författare)
Morozov, Konstantin M.St Petersburg Acad Univ, Russia; ITMO Univ, Russia (författare)
Ivanov, Konstantin A.ITMO Univ, Russia (författare)
Egorov, Anton Yu.ITMO Univ, Russia (författare)
Kaliteevski, Mikhail A.St Petersburg Acad Univ, Russia; ITMO Univ, Russia; Russian Acad Sci, Russia (författare)
Linköpings universitetTunnfilmsfysik (creator_code:org_t)

Av författaren/redakt...: Pozina, Galia; Girshova, Elizav ...; Morozov, Konstan ...; Ivanov, Konstant ...; Egorov, Anton Yu ...; Kaliteevski, Mik ...

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