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Design of ultrathin plasmonic quarter-wave plate based on period coupling |
Optics Letters, Vol. 38, Issue 5, pp. 679-681 (2013)
http://dx.doi.org/10.1364/OL.38.000679
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Abstract
Based on an analysis of the surface admittance of a plasmonic film with a substrate, we propose an ultrathin quarter-wave plate consisting of a periodic plane array of symmetrical L-shaped plasmonic antennas. The period, which determines the coupling among L-shaped antennas, is an important parameter for optimizing the performance of the structure. Numerical simulation results show that an Au quarter-wave plate designed in this Letter can efficiently convert a linearly polarized light at normal incidence into circularly polarized light, whose ellipticity is 0.994 at an operating wavelength of 1550 nm. The thickness is only 30 nm, which is nearly
© 2013 Optical Society of America
OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(260.1440) Physical optics : Birefringence
(260.5430) Physical optics : Polarization
(250.5403) Optoelectronics : Plasmonics
ToC Category:
Plasmonics
History
Original Manuscript: November 30, 2012
Revised Manuscript: January 18, 2013
Manuscript Accepted: January 18, 2013
Published: February 25, 2013
Citation
Biao Yang, Wei-Min Ye, Xiao-Dong Yuan, Zhi-Hong Zhu, and Chun Zeng, "Design of ultrathin plasmonic quarter-wave plate based on period coupling," Opt. Lett. 38, 679-681 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-5-679
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