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
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.
. [J]. 中国物理快报, 2017, 34(7): 74209-.
C. A. P. Janet, M. Lavanya, K. B. Rajesh, M. Udhayakumar, Z. Jaroszewicz, D. Velauthapillai. Tight Focusing Properties of Azimuthally Polarized Pair of Vortex Beams through a Dielectric Interface. Chin. Phys. Lett., 2017, 34(7): 74209-.
2017, Vol. 34 
