Open Access

Generation of multiple focal hole segment by tight focusing of azimuthally polarized double ring shaped beam

N. Veerabagu Suresh, Department of ECE, Jayaraj Annapackiam CSI College of Engineering,Nazareth,Tamil Nadu R.C. Sarasvathi, Department of Physics, Government Arts College, Dharmapuri, Tamil Nadu Haresh M. Pandya, Department of Physics, Chikkanna Government Arts College, Trippur, Tamil Nadu K.B. Rajesh rajeskb@gmail.com
Department of Physics, Chikkanna Government Arts College, Trippur, Tamil Nadu

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Abstract

Based on the vector diffraction theory, the effect of phase modulation on the intensity distribution of TEM11 mode azimuthally polarized Laguerre-Gaussian beam in the focal region of high NA lens is investigated theoretically. It is observed that a properly designed complex phase filter can generate multiple focal hole segment and it is useful for the manipulation of optical traps.

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Reference

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