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Pis'ma v Zh. Èksper. Teoret. Fiz., 2016, Volume 104, Issue 3, Pages 167–172 (Mi jetpl5014)  

OPTICS AND NUCLEAR PHYSICS

Ensemble of asymmetric quantum dots in a cavity as a terahertz laser source

I. Yu. Chestnova, V. A. Shakhnazaryanbcd, I. A. Shelykhbce, A. P. Alodjantsab

a Vladimir State University, Vladimir, Russia
b National Research University of Information Technologies, Mechanics, and Optics (ITMO University), St. Petersburg, Russia
c Science Institute, University of Iceland, Reykjavik, Iceland
d Institute of Mathematics and High Technologies, RussianArmenian (Slavonic) University, Yerevan, Armenia
e Division of Physics and Applied Physics, Nanyang Technological University, Singapore

Abstract: The possibility of establishing a terahertz laser generation at a transition between the dressed states formed by the interaction of an intense optical field with an ensemble of asymmetric quantum dots (QDs) in a high-$Q$ terahertz cavity is discussed. It has been shown that the population inversion in the system of dressed states is achieved owing to spontaneous relaxation of the excited state of the QDs. The set of Maxwell–Bloch equations for the difference between dressed-state populations, polarization, and population of the cavity mode has been analyzed in the mean-field approximation. The lasing conditions have been clarified and the possibility of controlling the terahertz radiation intensity has been studied, including the case of an inhomogeneously broadened ensemble of QDs.

Funding Agency Grant Number
Ministry of Education and Science of the Russian Federation 074-U01
16.440.2014K
RFMEFI58715X0020
Russian Foundation for Basic Research 15-59-30406_-
15-52-52001__
16-32-60102___
14-02-97503___
European Union's Seventh Framework Programme ITN NOTEDEV
ITMO Visiting Professorship 5-100


DOI: https://doi.org/10.7868/S0370274X16150054

Full text: PDF file (314 kB)
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English version:
Journal of Experimental and Theoretical Physics Letters, 2016, 104:3, 169–174

Bibliographic databases:

Received: 08.06.2016
Revised: 24.06.2016

Citation: I. Yu. Chestnov, V. A. Shakhnazaryan, I. A. Shelykh, A. P. Alodjants, “Ensemble of asymmetric quantum dots in a cavity as a terahertz laser source”, Pis'ma v Zh. Èksper. Teoret. Fiz., 104:3 (2016), 167–172; JETP Letters, 104:3 (2016), 169–174

Citation in format AMSBIB
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\paper Ensemble of asymmetric quantum dots in a cavity as a terahertz laser source
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\pages 167--172
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\crossref{https://doi.org/10.7868/S0370274X16150054}
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\jour JETP Letters
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\pages 169--174
\crossref{https://doi.org/10.1134/S0021364016150066}
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