Anomalous backward scattering of light by a two-side-open subwavelength metallic slit

M. Mechler; S. V. Kukhlevsky

doi:10.1117/12.638513

28 December 2005 Anomalous backward scattering of light by a two-side-open subwavelength metallic slit

M. Mechler, S. V. Kukhlevsky

Proceedings Volume 6037, Device and Process Technologies for Microelectronics, MEMS, and Photonics IV; 60370C (2005) https://doi.org/10.1117/12.638513
Event: Microelectronics, MEMS, and Nanotechnology, 2005, Brisbane, Australia

Abstract

The backward scattering of TM-polarized light by a two-side-open subwavelength slit in a metal film is analyzed. We show that the reflection coefficient versus wavelength possesses a Fabry-Perot-like dependence that is similar to the anomalous behavior of transmission reported in the study [Y. Takakura, Phys. Rev. Lett. 86, 5601 (2001)]. The open slit totally reflects the light at the near-to-resonance wavelengths. In addition, we show that the interference of incident and resonantly backward-scattered light produces in the near-field diffraction zone a spatially localized wave whose intensity is 10-10³ times greater than the incident wave, but one order of magnitude smaller than the intra-cavity intensity. The amplitude and phase of the resonant wave at the slit entrance and exit are different from that of a Fabry-Perot cavity.

Citation Download Citation

M. Mechler and S. V. Kukhlevsky "Anomalous backward scattering of light by a two-side-open subwavelength metallic slit", Proc. SPIE 6037, Device and Process Technologies for Microelectronics, MEMS, and Photonics IV, 60370C (28 December 2005); https://doi.org/10.1117/12.638513

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