Open Access

Effect of Coma on Tightly Focused Radially Polarized Vortex Beams

G. Therese Anita, anithamilton10@gmail.com
Department of Physics, Arunachala College of Engineering for Women, Nagercoil, TN, India T. V. S. PILLA, Department of Physics, Arunachala College of Engineering for Women, Nagercoil, TN, India K. B.Rajesh Department of Physics, Chikkanna Government Arts College, Tiruppur, TN, India

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Abstract

In this paper attention is given to the effects of primary coma on the radially polarized vortex beam based on the vector diffraction theory. It is observed that by properly choosing the polarization angle and topological charge one can obtain many novel focal patterns suitable for optical tweezers, laser printing and material process. However, it is observed that the focusing objective with coma generates structural modification and positional shift of the generated focal structure.

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Reference

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