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Theory and implementation of focal shift of plasmonic lenses |
Optics Letters, Vol. 37, Issue 9, pp. 1592-1594 (2012)
http://dx.doi.org/10.1364/OL.37.001592
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Abstract
We utilize three diffraction theories to investigate the focal-shift phenomena of plasmonic lenses. By taking the Fresnel number into account, a better accuracy in predicting the relative focal shift can be achieved for low-Fresnel-number systems. On the basis of this focal-shift effect, we present a method to realize an active plasmonic lens. Two-dimensional finite-difference time-domain simulation is performed to verify the method proposed.
© 2012 Optical Society of America
OCIS Codes
(220.3630) Optical design and fabrication : Lenses
(240.6680) Optics at surfaces : Surface plasmons
(310.6628) Thin films : Subwavelength structures, nanostructures
ToC Category:
Optical Design and Fabrication
History
Original Manuscript: December 14, 2011
Revised Manuscript: January 16, 2012
Manuscript Accepted: February 15, 2012
Published: May 2, 2012
Citation
Yiting Yu and Hans Zappe, "Theory and implementation of focal shift of plasmonic lenses," Opt. Lett. 37, 1592-1594 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-9-1592
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