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Sequence of focused optical vortices generated by a spiral fractal zone plate
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10.1063/1.2226995
/content/aip/journal/apl/89/3/10.1063/1.2226995
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/3/10.1063/1.2226995
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Phase distributions of (a) a FZP with and and (b) a SFZP with , , and . Both the scale bars in the right show the phase values represented by gray scales.

Image of FIG. 2.
FIG. 2.

(Color online) Normalized axial intensity contours for (a) the FZP with and and (b) the SFZP with , , and . The top horizontal axis in both the diagrams is the propagation distance and the bottom is the normalized axial distance. The horizontal dashed lines indicate the sampling lines through the maximum intensity points. Both patterns in (a) and (b) are circular symmetric.

Image of FIG. 3.
FIG. 3.

(Color online) Logarithm plots of axial irradiances of (a) the FZP and (b) the SFZP. Both the plots are obtained by sampling the dashed lines illustrated in Figs. 2(a) and 2(b), respectively. The top horizontal axis is the propagation distance and the bottom is the normalized axial distance.

Image of FIG. 4.
FIG. 4.

(Color online) The recorded beam profiles reconstructed by the SFZP at distances of (a) , 650, 700, and and (b) , 965, 1120, and , respectively.

Image of FIG. 5.
FIG. 5.

(Color online) (a) Intensity profile of the beam at and (b) interference of the beam with a reference beam.

Image of FIG. 6.
FIG. 6.

(Color online) Simulated example of three-dimensional optical vortices generated by the SFZP for optical trapping configuration. The primary focus is positioned at and other bright spots in the beam propagation direction are the subsidiary foci.

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/content/aip/journal/apl/89/3/10.1063/1.2226995
2006-07-17
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Sequence of focused optical vortices generated by a spiral fractal zone plate
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/3/10.1063/1.2226995
10.1063/1.2226995
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