Gain-enhanced optical coherence in a high optical gain semiconductor

Peter P. Vasil'Ev, Ian H. White

Research output: Contribution to journalArticlepeer-review

2 Citations (SciVal)


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.

Original languageEnglish
Pages (from-to)2270-2273
Number of pages4
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Issue number33
Publication statusPublished - 2 Jul 2012

ASJC Scopus subject areas

  • General Physics and Astronomy


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