Abstract

Diffraction of TM-polarized waves by a slit in a thick screen of infinite conductivity is treated. The case of an arbitrary incident beam wave is considered. We study the resonances that appear when the wavelength of the incident beam wave is larger than the slit width, i.e., the subwavelength regime where a one-mode model for the slit can be considered. High anomalous values (resonances) of the transmission coefficient, the angular diffracted energy, and the magnetic field within the slit are analyzed. A simple linear relationship to determine the resonant wavelengths is proposed. We show that the transmission coefficient, the normal diffracted energy, and the magnetic field within the cavity are linear functions of the resonant wavelength and the thickness of the screen. Additionally and surprisingly, we reveal that under certain conditions the incident beam wave via the diffraction can give a suppressed light transmission; i.e., a minimum in the transmission is obtained where a maximum is expected.

© 2007 Optical Society of America

Rigorous theory of the diffraction of Gaussian beams by finite gratings: TM polarization

O. Mata-Mendez, J. Avendaño, and F. Chavez-Rivas
J. Opt. Soc. Am. A 23(8) 1889-1896 (2006)

Rigorous theory of the diffraction of Gaussian beams by finite gratings: TE polarization

J. Sumaya-Martinez, O. Mata-Mendez, and F. Chavez-Rivas
J. Opt. Soc. Am. A 20(5) 827-835 (2003)

Single-scattering theory of light diffraction by a circular subwavelength aperture in a finitely conducting screen

Evgeny Popov, Michel Nevière, Anne Sentenac, Nicolas Bonod, Anne-Laure Fehrembach, Jérôme Wenger, Pierre-François Lenne, and Hervé Rigneault
J. Opt. Soc. Am. A 24(2) 339-358 (2007)

Diffraction of Gaussian and Hermite–Gaussian beams by finite gratings

O. Mata-Mendez and F. Chavez-Rivas
J. Opt. Soc. Am. A 18(3) 537-545 (2001)

Dependence of resonant light transmission properties of a subwavelength slit on structural parameters

K. Lindfors, L. Lechner, and M. Kaivola
Opt. Express 17(13) 11026-11038 (2009)