Total absorption of an electromagnetic wave by an overdense plasma

Details Total absorption of an electromagnetic wave by an overdense plasma Total absorption of an electromagnetic wave by an overdense plasma

2005-09-04

arxiv.org/abs/physics/0509028v1

Phys. Rev. Lett. 95, 165003 (2005)

Physics

Plasma Physics

To be published in PRL

Scientific paper

10.1103/PhysRevLett.95.165003

We show both theoretically and experimentally that an electromagnetic wave can be totally absorbed by an overdense plasma when a subwavelength diffraction grating is placed in front of the plasma surface. The absorption is due to dissipation of surface plasma waves (plasmons-polaritons) that have been resonantly excited by the evanescent component of the diffracted electromagnetic wave. The developed theoretical model allows one to determine the conditions for the total absorption.

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