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

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

doi:10.1364/AO.46.005593

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

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

Mechanical & Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

59 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 language	English (US)
Pages (from-to)	5593-5597
Number of pages	5
Journal	Applied Optics
Volume	46
Issue number	23
DOIs	https://doi.org/10.1364/AO.46.005593
State	Published - Aug 10 2007

All Science Journal Classification (ASJC) codes

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

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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.",

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AU - Musin, Roman R.

AU - Shneider, Mikhail N.

AU - Zheltikov, Aleksei M.

AU - Miles, Richard B.

PY - 2007/8/10

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N2 - 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.

AB - 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.

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

Abstract

All Science Journal Classification (ASJC) codes

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