Creation of Multiple Subwavelength Focal Spot Segments Using Phase Modulated Radially Polarized Multi Gaussian Beam
K. Prabakaran1**, K. B. Rajesh2, S. Sumathira3, M. D. Bharathi3, R. Hemamalini3, A. M. Musthafa4, V. Aroulmoji5
1Department of Physics, Mahendra Arts and Science College (Autonomous), Namakkal, Tamilnadu, India 2Department of Physics, Chikkanna Government Arts College, Tiruppur, Tamilnadu, India 3Department of Physics, Sri Sarada College for Women (Autonomous), Salem, Tamilnadu, India 4Department of General Studies (Physics Group), Jubail University College (Male Branch) Royal Commission of Jubail, Kingdom of Saudi Arabia 5Center for Research and Development, Mahendra Educational Institutions, Namakkal, Tamil Nadu, India
Abstract：Based on the vector diffraction theory, the effect of complex phase filters on intensity distribution of a radially polarized multi Gaussian beam in the focal region of high NA lens is theoretically investigated. It is observed that a properly designed multi belt complex phase filter can generate subwavelength novel focal patterns including splitting of focal spots and generation of multiple focal spot segments such as eight, six and four focal spots along the optical axis are obtained. We expect that such an investigation is useful for optical manipulation and material processing, multiple high refractive index particle trapping technologies.
. [J]. 中国物理快报, 2016, 33(09): 94203-094203.
K. Prabakaran, K. B. Rajesh, S. Sumathira, M. D. Bharathi, R. Hemamalini, A. M. Musthafa, V. Aroulmoji. Creation of Multiple Subwavelength Focal Spot Segments Using Phase Modulated Radially Polarized Multi Gaussian Beam. Chin. Phys. Lett., 2016, 33(09): 94203-094203.
2016, Vol. 33 
