Abstract

Optical resolution beyond the diffraction limit can be achieved by use of a metallic nanoaperture in a near-field optical system. Conventional nanoapertures have very low power throughput. Using a numerical finite-difference time domain method, we discovered a unique C-shaped aperture that provides 3 orders of magnitude more power throughput than a conventional square aperture with a similar near-field spot size of 0.1λ Microwave experiments at 6 GHz quantitatively confirmed the simulated transmission enhancement. The high transmission of the C-aperture—or one of the related shapes—is linked to both a propagation mode in the aperture and local surface plasmons.

© 2003 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Design of a C aperture to achieve λ/10 resolution and resonant transmission

Xiaolei Shi and Lambertus Hesselink
J. Opt. Soc. Am. B 21(7) 1305-1317 (2004)

High transmission through ridge nano-apertures on Vertical-Cavity Surface-Emitting Lasers

Zhilong Rao, Lambertus Hesselink, and James S. Harris
Opt. Express 15(16) 10427-10438 (2007)

Cutoff wavelength of ridge waveguide near field transducer for disk data storage

Chubing Peng, Eric X. Jin, Thomas W. Clinton, and Mike A. Seigler
Opt. Express 16(20) 16043-16051 (2008)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription