Role of plasma cooling, heating, and memory effects in subpicosecond pulse propagation in semiconductor amplifiers

Robert A Indik, Rudolf Binder, M. Mlejnek, Jerome V Moloney, S. Hughes, A. Knorr, Stephan W Koch

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Based on a microscopic theory of a two-band semiconductor light amplifier, we show that plasma heating, cooling, and ultrafast memory effects all act in concert to produce strong distortion of subpicosecond pulses propagating in semiconductor amplifiers. Plasma heating, spectral hole burning, and carrier density depletion are responsible for saturation of the gain seen by a propagating intense femtosecond pulse in the amplifier. Plasma cooling replenishes the carrier population on the trailing edge of the pulse, leading to pulse broadening as a consequence of gain regeneration. The inclusion of memory effects in the description of dephasing processes goes beyond the usual Markov assumption of constant dephasing rates; it significantly affects the dynamical pulse reshaping processes.

Original languageEnglish (US)
Pages (from-to)3614-3620
Number of pages7
JournalPhysical Review A
Volume53
Issue number5
StatePublished - May 1996

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plasma cooling
amplifiers
heating
propagation
pulses
plasma heating
trailing edges
hole burning
regeneration
light amplifiers
depletion
inclusions
saturation
cooling

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Atomic and Molecular Physics, and Optics

Cite this

Role of plasma cooling, heating, and memory effects in subpicosecond pulse propagation in semiconductor amplifiers. / Indik, Robert A; Binder, Rudolf; Mlejnek, M.; Moloney, Jerome V; Hughes, S.; Knorr, A.; Koch, Stephan W.

In: Physical Review A, Vol. 53, No. 5, 05.1996, p. 3614-3620.

Research output: Contribution to journalArticle

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