caa a22 4500 60624414X CHVBK 20210128101328.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s12596-015-0309-y doi (NATIONALLICENCE)springer-10.1007/s12596-015-0309-y Generation of multiple focal spot using phase modulated radially polarized TEM11 * mode beam [Elektronische Daten] [K. Prabakaran, K. Rajesh, T. Pillai, R. Chandrasekaran, R. Sarasvathi] We propose a new approach for generating multiple focal spots segment of sub wavelength size, by tight focusing of phase modulated double ring shaped radially polarized beam. The focusing properties are investigated theoretically by vector diffraction theory. We proposed to design of binary phase plate (BPP) which can tune the phase of the incident RTEM11 * mode radially polarized Laguerre -Gaussian beams (R-TEM11*) beam in such way to generate a focal segment with four and three numbers of focal spots repectively. We also observed that by properly tuning the pupil to beam ratio(β) of the incident R-TEM11* beam, the generated four or three focal spot segment can be tuned to a focal segment of two focal spot. The Optical Society of India, 2015 Focus shaping nationallicence Optical manipulation nationallicence LG (1,1) nationallicence Polarization nationallicence Prabakaran K. Department of Physics, Mahendra Arts and Science College (Autonomous), Namakkal, Tamilnadu, India aut Rajesh K. Department of Physics, Chikkanna Government Arts College, Tiruppur, Tamilnadu, India aut Pillai T. Department of Physics, University College of Engineering, Nagercoil, Tamilnadu, India aut Chandrasekaran R. Department of Physics, Government Arts College, Dharmapuri, Tamilnadu, India aut Sarasvathi R. Department of Physics, Government Arts College, Dharmapuri, Tamilnadu, India aut Journal of Optics Springer India 44/4(2015-12-01), 311-316 0972-8821 44:4<311 2015 44 12596 https://doi.org/10.1007/s12596-015-0309-y text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s12596-015-0309-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Prabakaran K. Department of Physics, Mahendra Arts and Science College (Autonomous), Namakkal, Tamilnadu, India aut NATIONALLICENCE 700 1- Rajesh K. Department of Physics, Chikkanna Government Arts College, Tiruppur, Tamilnadu, India aut NATIONALLICENCE 700 1- Pillai T. Department of Physics, University College of Engineering, Nagercoil, Tamilnadu, India aut NATIONALLICENCE 700 1- Chandrasekaran R. Department of Physics, Government Arts College, Dharmapuri, Tamilnadu, India aut NATIONALLICENCE 700 1- Sarasvathi R. Department of Physics, Government Arts College, Dharmapuri, Tamilnadu, India aut NATIONALLICENCE 773 0- Journal of Optics Springer India 44/4(2015-12-01), 311-316 0972-8821 44:4<311 2015 44 12596