Near-, mesoscopic and far-field regimes of a subwavelength Young's double-slit

Le Perchec, J.; Barbara, A.; Quemerais, P.

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Near-, mesoscopic and far-field regimes of a subwavelength Young's double-slit

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Quemerais, P.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Le Perchec, J., Barbara, A., & Quemerais, P. (2011). Near-, mesoscopic and far-field regimes of a subwavelength Young's double-slit. New Journal of Physics, 13: 083025.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-8C43-0

Abstract

The coupling distance between two narrow resonating slits made in a thick metal screen strongly modulates the optical spectral features of their scattering resonances. We show that these non-trivial modulations result from dipolar-type interactions between the slits. The radiation damping, frequency shift and local light enhancement of these modes vary with the coupling distance, and we derive analytical expressions for these physical quantities. We also explain how transmission and antenna-like radiation pattern can be tuned with specific incidence angles.