dorsal/arxiv
View SchemaControlling Strong Electromagnetic Fields at a Sub-Wavelength Scale
| Authors | J. Le Perchec, P. Quemerais, A. Barbara, T. Lopez-Rios |
|---|---|
| Categories | |
| ArXiv ID | physics/0602133 |
| URL | https://arxiv.org/abs/physics/0602133 |
| DOI | 10.1103/PhysRevLett.97.036405 |
Abstract
We investigate the optical response of two sub-wavelength grooves on a metallic screen, separated by a sub-wavelength distance. We show that the Fabry-Perot-like mode, already observed in one-dimensional periodic gratings and known for a single slit, splits into two resonances in our system : a symmetrical mode with a small Q-factor, and an antisymmetric one which leads to a much stronger light enhancement. This behavior results from the near-field coupling of the grooves. Moreover, the use of a second incident wave allows to control the localization of the photons in the groove of our choice, depending on the phase difference between the two incident waves. The system exactly acts as a sub-wavelength optical switch operated from far-field.
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"abstract": "We investigate the optical response of two sub-wavelength grooves on a\nmetallic screen, separated by a sub-wavelength distance. We show that the\nFabry-Perot-like mode, already observed in one-dimensional periodic gratings\nand known for a single slit, splits into two resonances in our system : a\nsymmetrical mode with a small Q-factor, and an antisymmetric one which leads to\na much stronger light enhancement. This behavior results from the near-field\ncoupling of the grooves. Moreover, the use of a second incident wave allows to\ncontrol the localization of the photons in the groove of our choice, depending\non the phase difference between the two incident waves. The system exactly acts\nas a sub-wavelength optical switch operated from far-field.",
"arxiv_id": "physics/0602133",
"authors": [
"J. Le Perchec",
"P. Quemerais",
"A. Barbara",
"T. Lopez-Rios"
],
"categories": [
"physics.optics"
],
"doi": "10.1103/PhysRevLett.97.036405",
"title": "Controlling Strong Electromagnetic Fields at a Sub-Wavelength Scale",
"url": "https://arxiv.org/abs/physics/0602133"
},
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