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

Roman R. Musin, Mikhail N. Shneider, Aleksei M. Zheltikov, Richard B. Miles

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)5593-5597
Number of pages5
JournalApplied Optics
Volume46
Issue number23
DOIs
StatePublished - Aug 10 2007

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Guiding radar signals by arrays of laser-induced filaments: Finite-difference analysis'. Together they form a unique fingerprint.

Cite this