Millimeter-wave diffraction by a photo-induced plasma grating

Author

Manasson, V.A. ; Sadovnik, L.S. ; Moussessian, A. ; Rutledge, D.B.

Author_Institution

Physical Opt. Corp., Torrance, CA, USA

Volume

43

Issue

9

fYear

1995

fDate

9/1/1995 12:00:00 AM

Firstpage

2288

Lastpage

2290

Abstract

Optical gratings are used extensively for beamsteering in the visible and IR range of the spectrum. Change in the dielectric permittivity of a semiconductor medium resulting from the excitation of a nonequilibrium electron-hole plasma makes it possible to extend this technique to MMW frequencies. A photo-induced plasma grating (PIPG) can be easily rewritten by changing the illumination pattern. So this technique can be used in optically controllable MMW antennas. Initial experimental work studied the diffraction of MMW propagating along a dielectric waveguide containing a PIPG. This paper reports on the diffraction of MMW propagating in free space, steered by the PIPG

Keywords

dielectric waveguides; diffraction gratings; millimetre wave antennas; millimetre wave propagation; permittivity; semiconductor plasma; PIPG; beamsteering; dielectric permittivity; dielectric waveguide; illumination pattern; millimeter-wave diffraction; nonequilibrium electron-hole plasma; optical gratings; optically controllable MMW antennas; photo-induced plasma grating; Dielectrics; Diffraction gratings; Frequency; Millimeter wave technology; Optical control; Optical diffraction; Optical propagation; Optical waveguides; Permittivity; Plasma waves;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.414579

Filename

414579