MMW optically scanning antenna based on plasma-induced grating

Vladimir A. Manasson; Lev S. Sadovnik; Paul I. Shnitser; Robert M. Mino; John S. Kruger

doi:10.1117/12.221229

22 September 1995 MMW optically scanning antenna based on plasma-induced grating

Vladimir A. Manasson, Lev S. Sadovnik, Paul I. Shnitser, Robert M. Mino, John S. Kruger

Proceedings Volume 2532, Application and Theory of Periodic Structures; (1995) https://doi.org/10.1117/12.221229
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

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.

Citation Download Citation

Vladimir A. Manasson, Lev S. Sadovnik, Paul I. Shnitser, Robert M. Mino, and John S. Kruger "MMW optically scanning antenna based on plasma-induced grating", Proc. SPIE 2532, Application and Theory of Periodic Structures, (22 September 1995); https://doi.org/10.1117/12.221229

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