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Enhancement of light emission in Bragg monolayer-thick quantum well structures

Pozina, Galia; Ivanov, Konstantin A.; Morozov, Konstantin M.; Girshova, Elizaveta I.; Egorov, Anton Yu; Clark, Stewart J.; Kaliteevski, Mikhail A.

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Galia Pozina

Konstantin A. Ivanov

Konstantin M. Morozov

Elizaveta I. Girshova

Anton Yu Egorov

Mikhail A. Kaliteevski


Control over spontaneous emission rate is important for improving efficiency in different semiconductor applications including lasers, LEDs and photovoltaics. Usually, an emitter should be placed inside the cavity to increase the spontaneous emission rate, although it is technologically challenging. Here we experimentally demonstrate a phenomenon of super-radiance observed in a cavity-less periodic Bragg structure based on InAs monolayer-thick multiple quantum wells (MQW). The collective super-radiant mode shows enhanced emission rate for specific angles and frequencies. This behaviour correlates with the calculations demonstrating individual spots of the enhanced Purcell coefficient near the Bragg condition curve. This study provides a perspective for realization of surface emitting cavity-less lasers with distributed feedback.


Pozina, G., Ivanov, K. A., Morozov, K. M., Girshova, E. I., Egorov, A. Y., Clark, S. J., & Kaliteevski, M. A. (2019). Enhancement of light emission in Bragg monolayer-thick quantum well structures. Scientific Reports, 9(1), Article 10162.

Journal Article Type Article
Acceptance Date Jun 28, 2019
Online Publication Date Jul 15, 2019
Publication Date Jul 15, 2019
Deposit Date Jul 24, 2019
Publicly Available Date Jul 24, 2019
Journal Scientific Reports
Publisher Nature Research
Peer Reviewed Peer Reviewed
Volume 9
Issue 1
Article Number 10162


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