CUED Publications database

Gain-enhanced optical coherence in a high optical gain semiconductor

Vasil'Ev, PP and White, IH (2012) Gain-enhanced optical coherence in a high optical gain semiconductor. Physics Letters, Section A: General, Atomic and Solid State Physics, 376. pp. 2270-2273. ISSN 0375-9601

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Abstract

The propagation of ultrashort pulses in a traveling wave semiconductor amplifier is considered. It is demonstrated that the effective polarization relaxation time, which determines the coherence of the interaction of pulses within the medium, strongly depends on its optical gain. As a result, it is shown that at large optical gains the coherence time can exceed the transverse relaxation time T2 by an order of magnitude, this accounting for the strong femtosecond superradiant pulse generation commonly observed in semiconductor laser structures. © 2012 Elsevier B.V. All rights reserved.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:51
Last Modified: 08 Dec 2014 02:40
DOI: 10.1016/j.physleta.2012.05.041