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Generation of high-quality optical vortex beams in free-space propagation by microfabricated wedge with spatial filtering technique
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10.1063/1.2760183
/content/aip/journal/apl/91/5/10.1063/1.2760183
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/5/10.1063/1.2760183
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Diffraction pattern at the focal plane (intensity and phase) of an incident Gaussian beam onto [(a) and (b)] a glass plate with a constant height imparting uniform phase shift of and [(c) and (d)] a conventional wedge imparting linear phase ramp.

Image of FIG. 2.
FIG. 2.

(a) Simulation of the elliptical-shaped vortex beam generated by a wedge. (b) Vortex beam with value generated after low-pass spatial filtering. (c) Pure helical phase of the vortex beam after spatial filtering at a distance of .

Image of FIG. 3.
FIG. 3.

(a) Experimentally generated elliptical-shaped vortex beam by a wedge. [(b) and (c)] Vortex beam in free-space propagation with value after a low-pass spatial filter at distances of 0.5 and , respectively.

Image of FIG. 4.
FIG. 4.

(Color online) (a) Plot of value as a function of radius of the aperture stop at two different propagation distances, (b) is the radius of the maximum intensity of vortex beam at the focal plane.

Image of FIG. 5.
FIG. 5.

[(a) and (b)] Phase distribution of the spatial filtered vortex beam at the focal plane when employing aperture radii of and , respectively.

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/content/aip/journal/apl/91/5/10.1063/1.2760183
2007-07-30
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Generation of high-quality optical vortex beams in free-space propagation by microfabricated wedge with spatial filtering technique
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/5/10.1063/1.2760183
10.1063/1.2760183
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