Broad-band polarization-independent total absorption of electromagnetic waves by an overdense plasma

Details Broad-band polarization-independent total absorption of electromagnetic waves by an overdense plasma Broad-band polarization-independent total absorption of electromagnetic waves by an overdense plasma

2009-08-20

arxiv.org/abs/0908.2851v2

Phys. Plasmas 17, 083302 (2010)

Physics

Plasma Physics

considerably broadened version

Scientific paper

10.1063/1.3475435

We have shown both experimentally and theoretically that polarization-independent broad-band absorption of electromagnetic waves by an overdense plasma, caused by surface plasmon-polaritons (SPP) excitation, can be achieved due to combination of two factors: a non-zero angle of incidence and a two-dimensional circular diffraction grating placed at a properly chosen distance in front of the plasma boundary. Direct detection of SPP has been achieved for the first time using a miniature antenna imbedded in the plasma.

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