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A perfect plasmonic quarter-wave plate
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10.1063/1.4766189
/content/aip/journal/apl/101/20/10.1063/1.4766189
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/20/10.1063/1.4766189
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Figures

Image of FIG. 1.
FIG. 1.

(a) Elliptical array of non-transmissive grooves of a BE structure forpolarization control with periodicity P = 760 nm and first groove radii and . (b) Zoom on the central hole with unequal dimensions nm and . The grooves were milled to the depth of 80 nm.

Image of FIG. 2.
FIG. 2.

(a) Retardation phase (red bars) and (blue bars) measured as a function of the hole ellipticity. The incident polarization state is prepared using a polarizer, a half-wave plate, and a QWP. The transmitted light (laser at ) is analyzed by an additional QWP followed by an analyzer. The full Mueller matrix is measured following the procedure described in Ref. 17. As no depolarization was detected, an equivalent Jones matrix was calculated from which and were extracted. (b) Intensity modulation of the leakage radiation in the Fourier plane as a function of the hole ellipticity. Inset—a typical intensity distribution, captured in the LRM Fourier plane. The arrow points to the SP wave-vector circle .

Image of FIG. 3.
FIG. 3.

(a) Normalized intensity transmitted through a circular BE as a function of a/P. Red circles are measured values and the solid blue line is the model with a best fitting model parameters r = 0.2 + 0.2i and . (b) Phase of the cavity mode as a function of a/P. Diamonds are the values extracted from measured interference patterns and the red solid line represents the model. Insets show the geometry of the BE structure and a typical interference pattern of a pair of bull's eyes separated by 15 μm. The scale bar is 2 μm. Cross-sections were measured along the blue dashed line.

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/content/aip/journal/apl/101/20/10.1063/1.4766189
2012-11-13
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A perfect plasmonic quarter-wave plate
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/20/10.1063/1.4766189
10.1063/1.4766189
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