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Transmission of doughnut light through a bull’s eye structure
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10.1063/1.3231929
/content/aip/journal/apl/95/11/10.1063/1.3231929
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/11/10.1063/1.3231929
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Sketch map of our protocol. The typical doughnut light has an intensity null on the beam axis. Almost all the energy reaches the circular corrugations, excite SPs which propagate through the hole and reradiate photons.

Image of FIG. 2.
FIG. 2.

Transmission efficiency as a function of wavelength for bull’s eye structure with a hole in center (black square dots) and similar structure without hole in center (red round dots). Inset is a scanning electron microscope picture of our bull’s eye structure (groove periodicity, 500 nm, groove depth, 60 nm, hole diameter, 250 nm, and film thickness, 135 nm).

Image of FIG. 3.
FIG. 3.

Experimental setup. A CGH is used to change the OAM of the laser beam. The polarized laser beam is directed into the microscope and focused on the metal plate using a 100× objective lens (Nikon, ). Transmitted light is collected by another 100× objective lens (Nikon, ). Inset, pictures of part of a typical and produced light with the first order mode.

Image of FIG. 4.
FIG. 4.

CCD pictures of light beam before (upper) and after (lower) the bull’s eye structure. The light power is decreased to give clear pictures. A, B, and C are the cases for light with Gaussian mode , the first order mode , and a typical superposition mode (where and are real numbers), respectively.

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/content/aip/journal/apl/95/11/10.1063/1.3231929
2009-09-17
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Transmission of doughnut light through a bull’s eye structure
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/11/10.1063/1.3231929
10.1063/1.3231929
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