Wave-vector space picture for radiationless focusing and beaming
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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