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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 23 — Aug. 10, 2007
  • pp: 5593–5597

Guiding radar signals by arrays of laser-induced filaments: finite-difference analysis

Roman R. Musin, Mikhail N. Shneider, Aleksei M. Zheltikov, and Richard B. Miles  »View Author Affiliations


Applied Optics, Vol. 46, Issue 23, pp. 5593-5597 (2007)
http://dx.doi.org/10.1364/AO.46.005593


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Abstract

Circular arrays of plasma filaments induced by femtosecond laser pulses in atmospheric air are shown to support guided modes of electromagnetic radiation in the centimeter and millimeter wavelength range. With the refractive index of laser-induced filaments being lower than the refractive index of nonionized air, arrays of such filaments can serve as a structured waveguide cladding, providing an index guiding of radar signals in a nonionized gas region. In spite of attenuation of radar radiation induced by plasma absorption, filament-array waveguides are shown to enhance radar signal transmission relative to freely propagating radar beams.

© 2007 Optical Society of America

OCIS Codes
(280.1120) Remote sensing and sensors : Air pollution monitoring
(280.5600) Remote sensing and sensors : Radar

ToC Category:
Remote Sensing

History
Original Manuscript: October 19, 2006
Revised Manuscript: March 11, 2007
Manuscript Accepted: March 26, 2007
Published: August 7, 2007

Citation
Roman R. Musin, Mikhail N. Shneider, Aleksei M. Zheltikov, and Richard B. Miles, "Guiding radar signals by arrays of laser-induced filaments: finite-difference analysis," Appl. Opt. 46, 5593-5597 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-23-5593


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