| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Tight Focusing Properties of Azimuthally Polarized Pair of Vortex Beams through a Dielectric Interface |
| C. A. P. Janet1, M. Lavanya2, K. B. Rajesh3**, M. Udhayakumar3, Z. Jaroszewicz4, D. Velauthapillai5 |
1Department of Physics, St.Xavier's Catholic College of Engineering, Nagercoil, Tamilnadu, India
2Department of Physics, PSGR Krishnammal College for Women, Coimbatore, Tamilnadu, India
3Department of Physics, Chikkanna Government Arts College, Tiruppur, Tamilnadu, India
4Institute of Applied Optics, Department of Physical Optics, Warsaw, Poland and National Institute of Telecommunications, Warsaw, Poland
5Faculty of Engineering and Business Administration, Bergen University College, Bergen, Norway
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| Cite this article: |
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C. A. P. Janet, M. Lavanya, K. B. Rajesh et al 2017 Chin. Phys. Lett. 34 074209 |
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Abstract Tight focusing properties of an azimuthally polarized Gaussian beam with a pair of vortices through a dielectric interface is theoretically investigated by vector diffraction theory. For the incident beam with a pair of vortices of opposite topological charges, the vortices move toward each other, annihilate and revive in the vicinity of focal plane, which results in the generation of many novel focal patterns. The usable focal structures generated through the tight focusing of the double-vortex beams may find applications in micro-particle trapping, manipulation, and material processing, etc.
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Received: 24 April 2017
Published: 23 June 2017
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| PACS: |
42.25.Bs
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(Wave propagation, transmission and absorption)
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42.25.Ja
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(Polarization)
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42.79.Ag
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(Apertures, collimators)
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