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Direct measurement of versatile surface plasmon polaritons excited by split polarization
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10.1063/1.3552673
/content/aip/journal/apl/98/8/10.1063/1.3552673
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/8/10.1063/1.3552673
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematics of the experiment for SPP manipulation. (a) Collinear inverted microscopy in conjunction with an immersion objective lens and multilayer structure glass/Ti/Au/Air. (b) Split polarization with three parameters: , , and , respectively. (c) Excitation mechanism of a double excitation scheme and propagation behavior of SPPs associated with different observation planes.

Image of FIG. 2.
FIG. 2.

SPP field distributions imaged by SNOM under different excitation schemes: (a) single excitation, , on focus; (b) single excitation, , on focus; (c) double excitation, , , on focus; and (d) double excitation, , , defocus , where insets represent FDTD maps.

Image of FIG. 3.
FIG. 3.

Cross-sectional cut of interference in the case of double excitation scheme with different ratios of the opposite TM sector along the -axis: (a) and (b) , where the period of fringe pattern is increased due to more oblique component of wavevector in the case of .

Image of FIG. 4.
FIG. 4.

Simulated intensity distribution of SPPs under triple excitation scheme when the observation plane scanned through the focus with (a) defocus , (b) on focus, and (c) defocus . (d)–(f) represent the corresponding near-field images.

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/content/aip/journal/apl/98/8/10.1063/1.3552673
2011-02-24
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Direct measurement of versatile surface plasmon polaritons excited by split polarization
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/8/10.1063/1.3552673
10.1063/1.3552673
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