Creation of Super Long Transversely Polarized Optical Needle Using Azimuthally Polarized Multi Gaussian Beam
C. M. Sundaram1, K. Prabakaran2, P. M. Anbarasan1, K. B. Rajesh3**, A. M. Musthafa4
1Department of Physics, Periyar University, Salem, Tamilnadu, India 2Department of Physics, Mahendra Arts and Science College (Autonomous), Namakkal, Tamilnadu, India 3Department of Physics, Chikkanna Government Arts College, Tiruppur, Tamilnadu, India 4Department of General Studies (Physics Group), Jubail University College (Male Branch), Royal Commission of Jubail, Kingdom of Saudi Arabia
Abstract：The intensity distribution in the focal region of a high-NA lens for the incident azimuthally polarized multi Gaussian beam transmitted through a multi belt spiral phase hologram is studied on the basis of the vector diffraction theory. Here we report a new method used to generate a needle of transversely polarized light beam with sub diffraction beam size of 0.366$\lambda$ that propagates without divergence over a long distance of about 22$\lambda$ in free space. We also expect that such a light needle of transversely polarized beam may find its applications in utilizing optical materials or instruments responsive to the transversal field only.
. [J]. 中国物理快报, 2016, 33(06): 64203-064203.
C. M. Sundaram, K. Prabakaran, P. M. Anbarasan, K. B. Rajesh, A. M. Musthafa. Creation of Super Long Transversely Polarized Optical Needle Using Azimuthally Polarized Multi Gaussian Beam. Chin. Phys. Lett., 2016, 33(06): 64203-064203.
2016, Vol. 33 
