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Proceedings Paper

MMW optically scanning antenna based on plasma-induced grating
Author(s): Vladimir A. Manasson; Lev S. Sadovnik; Paul I. Shnitser; Robert M. Mino; John S. Kruger
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Paper Abstract

A light-induced grating aperture (LIGA) is a semiconductor plate containing a periodic structure formed of nonequilibrium light-induced electron-hole plasma. The presence of excess charge carriers in a semiconductor medium locally changes the dielectric constant of the material. Such a light-induced periodic structure can serve as a diffraction grating for millimeter waves (MMW), and generates diffracted beams propagating in directions distinct from that of the incident beam. The angle between the incident and diffracted beams depends on the period (Lambda) of the light-induced grating, a parameter that can be controlled using a liquid crystal display (LCD). The effect is strong enough not only for academic study but for practical application as well. The authors fabricated a new scanning MMW antenna in which MMW is diffracted by a LIGA.

Paper Details

Date Published: 22 September 1995
PDF: 10 pages
Proc. SPIE 2532, Application and Theory of Periodic Structures, (22 September 1995); doi: 10.1117/12.221229
Show Author Affiliations
Vladimir A. Manasson, Physical Optics Corp. (United States)
Lev S. Sadovnik, Physical Optics Corp. (United States)
Paul I. Shnitser, Physical Optics Corp. (United States)
Robert M. Mino, Physical Optics Corp. (United States)
John S. Kruger, U.S. Army Research Office (United States)

Published in SPIE Proceedings Vol. 2532:
Application and Theory of Periodic Structures
Tomasz Jannson, Editor(s)

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