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8 February 2015 Helmholtz resonator for electric field enhancement from visible to far-infrared
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Here we present a 2D slit-box electromagnetic nanoantenna inspired by the acoustic Helmholtz resonator. It is able to concentrate the energy into tiny volumes, and a giant field intensity enhancement is observed throughout the slit. Noteworthily, we have shown that this field intensity enhancement can also be obtained in three dimensional structures that are polarization independent. In the Helmholtz nanoantenna, the field is enhanced in a hot volume and not a hot point, which is of great interest for applications requiring extreme light concentration, such as SEIRA, non-linear optics and biophotonics.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Paul Chevalier, Patrick Bouchon, Jean-Jacques Greffet, Jean-Luc Pelouard, Riad Haidar, and Fabrice Pardo "Helmholtz resonator for electric field enhancement from visible to far-infrared", Proc. SPIE 9370, Quantum Sensing and Nanophotonic Devices XII, 93701P (8 February 2015);

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