RF-MMW Dipole Antenna Arrays From Laser Illuminated GaAs

Abstract

High resistivity photoconductive Gallium Arsenide (GaAs) can be used as elemental Hertzian dipole antenna arrays in which the time varying dipole current is produced by temporally modulating a laser (0.63um) beam irradiance with a pulse width on the order of a picosecond or less. Electromagnetic emission from the dipole will result at a wavelength equal to the temporal modulation wavelength. Theoretical results will be presented for emitted RF MMW radiant intensity from the array as a function of array geometry and laser pulse irradiation. These results will be compared to conventional RF MMW sources.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1998
Accession Number
ADA356417

Entities

People

  • D. Umphenour

Organizations

  • American Institute of Aeronautics and Astronautics

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aeronautics
  • Antenna Arrays
  • Antennas
  • Astronautics
  • Carrier Mobility
  • Dipole Antennas
  • Dye Lasers
  • Electric Fields
  • Electro-Optics
  • Electromagnetic Pulses
  • Equations
  • Frequency
  • Intensity
  • Laser Beams
  • Laser Pulses
  • Lasers
  • Radiant Intensity

Fields of Study

  • Physics

Readers

  • Phased Array Antenna Design.
  • Pulsed Power and Plasma Physics.
  • Semiconductor Device Technology

Technology Areas

  • Directed Energy
  • Microelectronics