Transmission of doughnut light through a bull's eye structure

Details Transmission of doughnut light through a bull's eye structure Transmission of doughnut light through a bull's eye structure

2009-04-28

arxiv.org/abs/0904.4349v2

Published in Appl. Phys. Lett. 95 111111(2009)

Physics

Optics

3 pages,4 figures

Scientific paper

We experimentally investigate the extraordinary optical transmission of doughnut light through a bull's eye structure. Since the intensity is vanished in the center of the beam, almost all the energy reaches the circular corrugations (not on the hole), excite surface plasmons which propagate through the hole and reradiate photons. The transmitted energy is about 57 times of the input energy on the hole area. It is also interesting that the transmitted light has a similar spatial shape with the input light although the diameter of the hole is much smaller than the wavelength of light.

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