Effect of the switching pattern of the illumination of dynamic apertures on the ranges of the generated localized waves

Amr M. Shaarawi, Sherif M. Sedky, Richard W. Ziolkowski, Fawzia M.M. Taiel

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

We study two different switching patterns of dynamic apertures illuminated by a focus-wave-mode excitation field. The two sources are chosen to be identical except that one is illuminated with use of a Gaussian time window, whereas the other uses a periodic function defined over the same time span. In spite of the similarity between the two dynamic apertures, the decay patterns of the amplitudes of their radiated fields are significantly different. A detailed analysis of the depletion of their spectral contents shows that the coupling between the spatial and temporal spectral components plays a decisive role in extending the range of the localization of the radiated pulses.

Original languageEnglish (US)
Pages (from-to)1712-1718
Number of pages7
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume13
Issue number8
DOIs
StatePublished - Aug 1996

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Computer Vision and Pattern Recognition

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