Generation of Multiple Focal Hole Segments Using Double-Ring Shaped Azimuthally Polarized Beam | Zendy

K. Lalithambigai | Zendy; R. Saraswathi | Zendy; P. M. Anbarasan | Zendy; K.B. Rajesh | Zendy; Zbigniew Jaroszewicz | Zendy

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Generation of Multiple Focal Hole Segments Using Double-Ring Shaped Azimuthally Polarized Beam

Author(s) -

K. Lalithambigai,

R. Saraswathi,

P. M. Anbarasan,

K.B. Rajesh,

Zbigniew Jaroszewicz

Publication year - 2013

Publication title -

journal of atomic and molecular physics

Language(s) - English

Resource type - Journals

ISSN - 2314-8039

DOI - 10.1155/2013/451715

Subject(s) - optics , focal length , focus (optics) , lens (geology) , binary number , beam (structure) , phase (matter) , cardinal point , optical axis , ring (chemistry) , physics , filter (signal processing) , materials science , chemistry , computer science , arithmetic , mathematics , organic chemistry , quantum mechanics , computer vision

We investigated the focusing properties of a double-ring-shaped azimuthally polarized beam tightly focused with a high NA lens and a binary phase filter. We observe that by using 3 belts and 5 belts binary phase filters novel focal patterns including splitting of focal rings and multiring focus are obtained. We also found that a suitably designed phase structure can shift the focal rings along optical axis. The author expects such investigation is worthwhile for optical manipulation and material processing technologies.

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