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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 19 — Oct. 1, 2009
  • pp: 2967–2969

Wave-vector space picture for radiationless focusing and beaming

Varat Intaraprasonk and Shanhui Fan  »View Author Affiliations


Optics Letters, Vol. 34, Issue 19, pp. 2967-2969 (2009)
http://dx.doi.org/10.1364/OL.34.002967


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Abstract

Radiationless interference of an electromagnetic wave occurs in the near field when the feature sizes of the waves are at the deep subwavelength scale. We present the propagation in such a regime using a wave-vector space picture. Using this picture, we reproduce the condition to achieve near-field focusing. We also design the initial field distribution needed for near-field beaming, where an intensity distribution maintains its shape as it propagates. We conclude the discussion by proposing a possible implementation of the near-field beaming scheme.

© 2009 Optical Society of America

OCIS Codes
(240.0240) Optics at surfaces : Optics at surfaces
(070.7345) Fourier optics and signal processing : Wave propagation

ToC Category:
Optics at Surfaces

History
Original Manuscript: June 18, 2009
Manuscript Accepted: July 24, 2009
Published: September 24, 2009

Citation
Varat Intaraprasonk and Shanhui Fan, "Wave-vector space picture for radiationless focusing and beaming," Opt. Lett. 34, 2967-2969 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-19-2967

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