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Role of a high gain of the medium in superradiance generation and in observation of coherent effects in semiconductor lasers

Vasil'ev, PP (1999) Role of a high gain of the medium in superradiance generation and in observation of coherent effects in semiconductor lasers. Quantum Electronics, 29. pp. 842-846. ISSN 1063-7818

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Abstract

A theoretical model of superradiant pulse generation in semiconductor laser structures is developed. It is shown that a high optical gain of the medium can overcome phase relaxation and results in a built-up superradiant state (macroscopic dipole) in an assembly of electron - hole pairs on a time scale much longer than the characteristic polarisation relaxation time T2. A criterion of the superradiance generation is the condition acmT2 > 1, where α is the gain coefficient and cm is the speed of light in the medium. The theoretical model describes both qualitatively and quantitatively the author's own experimental results.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:45
Last Modified: 08 Dec 2014 02:25
DOI: 10.1070/QE1999v029n10ABEH001587