Steady-state pulses and superradiance in short-wavelength, swept-gain amplifiers

R. Bonifacio, F. A. Hopf, Pierre Meystre, M. O. Scully

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

The steady-state behavior of amplifiers in which the excitation is swept at the speed of light is discussed in the semiclassical approximation. In the present work we examine the case where the decay time of the population is comparable to that of the polarization. Pulse propagation is shown to obey a generalized sine-Gordon equation which contains the effects of atomic relaxations. The analytical expression of the steady-state pulses (SSP) gives two threshold conditions. In the region of limited gain the SSP is a broad pulse with small area which can be obtained by small signal theory. In the second region of high gain the SSP is the superradiant π pulse. Its pulse power is not limited as in usual superradiant theory because, as we show, for a swept excitation the cooperation-length limit does not exist.

Original languageEnglish (US)
Pages (from-to)2568-2573
Number of pages6
JournalPhysical Review A
Volume12
Issue number6
DOIs
StatePublished - 1975

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amplifiers
pulses
wavelengths
high gain
excitation
thresholds
propagation
decay
polarization
approximation

ASJC Scopus subject areas

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

Cite this

Steady-state pulses and superradiance in short-wavelength, swept-gain amplifiers. / Bonifacio, R.; Hopf, F. A.; Meystre, Pierre; Scully, M. O.

In: Physical Review A, Vol. 12, No. 6, 1975, p. 2568-2573.

Research output: Contribution to journalArticle

Bonifacio, R. ; Hopf, F. A. ; Meystre, Pierre ; Scully, M. O. / Steady-state pulses and superradiance in short-wavelength, swept-gain amplifiers. In: Physical Review A. 1975 ; Vol. 12, No. 6. pp. 2568-2573.
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