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- Title
Purcell Effect and Nonlinear Behavior of the Emission in a Periodic Structure Composed of InAs Monolayers Embedded in a GaAs Matrix.
- Authors
Pozina, Galia; Girshova, Elizaveta I.; Morozov, Konstantin M.; Ivanov, Konstantin A.; Egorov, Anton Yu.; Kaliteevski, Mikhail A.
- Abstract
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°. 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.
- Subjects
QUANTUM wells; MONOMOLECULAR films; AUDITING standards; GALLIUM arsenide; PHOTOLUMINESCENCE measurement; TIME-resolved measurements
- Publication
Annalen der Physik, 2019, Vol 531, Issue 6, pN.PAG
- ISSN
0003-3804
- Publication type
Article
- DOI
10.1002/andp.201800388