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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry Van Driel
  • Vol. 26, Iss. 12 — Dec. 1, 2009
  • pp: 2455–2460

Evolution of Sommerfeld and Brillouin precursors in intermediate spectral regimes

Heejeong Jeong, Ulf L. Österberg, and Tobias Hansson  »View Author Affiliations


JOSA B, Vol. 26, Issue 12, pp. 2455-2460 (2009)
http://dx.doi.org/10.1364/JOSAB.26.002455


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Abstract

We study, numerically, the transitional behavior of precursors in the intermediate spectral regime between two contrasting regimes for which analytical solutions exist. The two opposite regimes are, respectively, defined as (1) off-resonance carrier with a spectral pulse width comparable to the medium’s absorption linewidth and (2) on-resonance carrier with the spectral width of the pulse much narrower than the absorption linewidth. Beyond these two regimes, there have been few studies of precursors. In this paper, we investigate precursor dynamics for the intermediate spectral regime using the finite-difference time domain method. The parameter that has the strongest influence on the precursor dynamics is found to be the plasma frequency, ω p . This research is applicable for controlling transients in fast communication systems.

© 2009 Optical Society of America

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(320.7120) Ultrafast optics : Ultrafast phenomena
(070.7145) Fourier optics and signal processing : Ultrafast processing
(070.7345) Fourier optics and signal processing : Wave propagation

ToC Category:
Fourier Optics and Signal Processing

History
Original Manuscript: July 8, 2009
Revised Manuscript: October 8, 2009
Manuscript Accepted: October 10, 2009
Published: November 30, 2009

Citation
Heejeong Jeong, Ulf L. Österberg, and Tobias Hansson, "Evolution of Sommerfeld and Brillouin precursors in intermediate spectral regimes," J. Opt. Soc. Am. B 26, 2455-2460 (2009)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-26-12-2455


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