| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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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
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| Cite this article: |
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K. Prabakaran, K. B. Rajesh, S. Sumathira et al 2016 Chin. Phys. Lett. 33 094203 |
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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.
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Received: 07 June 2016
Published: 30 September 2016
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