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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry van Driel
  • Vol. 27, Iss. 1 — Jan. 1, 2010
  • pp: 59–64

Wavelength squeeze of surface plasmon polariton in a subwavelength metal slit

Chao Li, Yun-Song Zhou, Huai-Yu Wang, and Fu-He Wang  »View Author Affiliations

JOSA B, Vol. 27, Issue 1, pp. 59-64 (2010)

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One of the keys to understanding the extraordinary optical transmission in a subwavelength metal slit is in what field mode is excited. We find that, compared to the usual surface plasmon polariton (SPP), the wavelength of the excited mode is squeezed and will become smaller as the slit width does. This mode is called an in-slit SPP. We show how the wavelength of this mode can be solved by a formula and clearly analyze the physical reason for the wavelength squeeze. Furthermore, the similarities and differences of the wavelength squeeze between normal incidence and oblique incidence are pointed out.

© 2009 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(260.3910) Physical optics : Metal optics

ToC Category:
Optics at Surfaces

Original Manuscript: July 1, 2009
Revised Manuscript: October 27, 2009
Manuscript Accepted: November 5, 2009
Published: December 18, 2009

Chao Li, Yun-Song Zhou, Huai-Yu Wang, and Fu-He Wang, "Wavelength squeeze of surface plasmon polariton in a subwavelength metal slit," J. Opt. Soc. Am. B 27, 59-64 (2010)

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