Gain-enhanced optical coherence in a high optical gain semiconductor

Peter P. Vasil'Ev; Ian H. White

doi:10.1016/j.physleta.2012.05.041

Gain-enhanced optical coherence in a high optical gain semiconductor

Peter P. Vasil'Ev, Ian H. White

Vice Chancellor's Office

Research output: Contribution to journal › Article › peer-review

2 Citations (SciVal)

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.

Original language	English
Pages (from-to)	2270-2273
Number of pages	4
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	376
Issue number	33
DOIs	https://doi.org/10.1016/j.physleta.2012.05.041
Publication status	Published - 2 Jul 2012

ASJC Scopus subject areas

General Physics and Astronomy

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10.1016/j.physleta.2012.05.041

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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.",

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AU - White, Ian H.

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N2 - 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.

AB - 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.

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JO - Physics Letters, Section A: General, Atomic and Solid State Physics

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ER -

Gain-enhanced optical coherence in a high optical gain semiconductor

Abstract

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