Control of the magnitude and spatial distribution of interference energy flows in near fields of systems of identical radiators

Control of the magnitude and spatial distribution of interference energy flows in near fields of systems of identical radiators

The problem of active control for both the magnitude and spatial distribution of individual components of the interference component of the Poynting vector within the near zone of a system of radiators is studied. The characteristic size of this zone is on the order of the wavelength and is characte...

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Veröffentlicht in:Optics and spectroscopy 2015-04, Vol.118 (4), p.605-608
Hauptverfasser: Belichenko, V. P., Zapasnoy, A. S., Shestakov, P. V.
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Sprache:eng
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Lasers
Optical Devices
Optics
Photonics
Physical Optics
Physics
Physics and Astronomy
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container_title Optics and spectroscopy
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creator Belichenko, V. P.
Zapasnoy, A. S.
Shestakov, P. V.
description The problem of active control for both the magnitude and spatial distribution of individual components of the interference component of the Poynting vector within the near zone of a system of radiators is studied. The characteristic size of this zone is on the order of the wavelength and is characterized by the presence of evanescent (nonpropagating) fields, which are formed due to the interference interaction of radiators. Using multipole expansions for fields and special summation formulas for such expansions allows one to obtain concise expressions convenient in carrying out numerical calculations. The results of calculations confirm the feasibility of the above-mentioned control in principle in solving problems of medium and object sensing.
doi_str_mv 10.1134/S0030400X15040037
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subjects Lasers
Optical Devices
Optics
Photonics
Physical Optics
Physics
Physics and Astronomy
title Control of the magnitude and spatial distribution of interference energy flows in near fields of systems of identical radiators
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