%0 Journal Article %T Generation of Tunable Focal Spot and Focal hole by Radially Polarized Axisymmetric Bessel-modulated Gaussian beam %A N.Veerabagu Suresh %A K. Prabakaran %A R. Chandrasekar %A Haresh M. Pandya %A K.B. Rajesh %D 2013 %R 10.13074/jent.2013.02.nciset317 %J Journal of Environmental Nanotechnology %P 107-112 %V 2 %N (Special Issue) %I Institute for Environmental Nanotechnology %U https://doi.org/10.13074/jent.2013.02.nciset317