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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 21, Iss. 7 — Jul. 1, 2004
  • pp: 1305–1317

Design of a C aperture to achieve λ/10 resolution and resonant transmission

Xiaolei Shi and Lambertus Hesselink  »View Author Affiliations

JOSA B, Vol. 21, Issue 7, pp. 1305-1317 (2004)

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Small subwavelength apertures provide high spatial resolution that is not limited by the diffraction limit. However, application of these apertures to practical problems has been hindered by the critical problem of extremely low power transmission efficiency. Recently, we reported a specially designed subwavelength aperture that has a letter C shape (ShiX.ThorntonR. L.HesselinkL., Opt. Lett. 28, 1320 (2003)]. A well-designed C aperture can provide both a high spatial resolution of ∼λ/10 and a high power throughput greater than 1. We present the underlying design ideas of the C aperture and report interesting general properties of optical transmissions through a single two-dimensional subwavelength aperture, based on numerical finite-difference time-domain simulations and fundamental observations. These results are expected to provide helpful information for both C-aperture applications and general studies of subwavelength metallic structures.

© 2004 Optical Society of America

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(110.5220) Imaging systems : Photolithography
(180.0180) Microscopy : Microscopy
(210.0210) Optical data storage : Optical data storage
(260.5740) Physical optics : Resonance

Xiaolei Shi and Lambertus Hesselink, "Design of a C aperture to achieve λ/10 resolution and resonant transmission," J. Opt. Soc. Am. B 21, 1305-1317 (2004)

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