%0 Journal Article %T Effect of Complex Phase Plate on Tight Focusing of Azimuthally Polarized Dark and Anti-dark Gaussian Beam %A J. William Charles %A U. Udhayakumar %A K. B. Rajesh %A A. Mohamed Musthafa %D 2019 %R 10.13074/jent.2019.09.193372 %J Journal of Environmental Nanotechnology %P 01-06 %V 8 %N 3 %I Institute for Environmental Nanotechnology %U https://doi.org/10.13074/jent.2019.09.193372