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Optical activity and coupling in twisted dimer meta-atoms
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10.1063/1.3694269
/content/aip/journal/apl/100/11/10.1063/1.3694269
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/11/10.1063/1.3694269
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Schematic layout of the twisted cut-wire pair. The two cut-wires locate on the plane z = –s/2 and z = s/2, respectively, with a twist angle between them. We set their central points lying on the z axis. The impinging wave propagates in the z direction.

Image of FIG. 2.
FIG. 2.

(Color online) Normalized amplitudes and phases of and under different twist angle . (a) and (b) , (c) and (d) , and (e) and (f) . The results from our analytical model (an.) and numerical simulation (nu.) are plotted in (—) and (), respectively. The black dotted line in the phase diagrams are the phase differences between and calculated with analytical model.

Image of FIG. 3.
FIG. 3.

(Color online) Amplitudes and phases of the electric field of forward radiated wave in positive z direction, under different twist angles. (a) and (b) , (c) and (d) , (e) and (f) . The results from analytical model (an.) and numerical simulation (nu.) are plotted in (—) and (), respectively.

Image of FIG. 4.
FIG. 4.

(Color online) Polarization rotation angle as a function of frequency and twist angle . (a) For the scattered wave when cut-wire 1 is oriented along y direction; (b) for the averaged scattered wave when cut-wire 1 is oriented along x and y directions. The optimum twist angles for different frequencies are shown by the magenta dots, and the red circle denotes the position with maximum polarization rotation.

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/content/aip/journal/apl/100/11/10.1063/1.3694269
2012-03-15
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optical activity and coupling in twisted dimer meta-atoms
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/11/10.1063/1.3694269
10.1063/1.3694269
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