%0 Journal Article %T Focusing Properties of Spirally Polarized Axisymmetric QBG Beams with 4pi Configuration %A V. Senthilkumar %A L.Banupriya %A M. Udhayakumar %A K.B. Rajesh %D 2016 %R 10.13074/jent.2016.03.161183 %J Journal of Environmental Nanotechnology %P 26-32 %V 5 %N 1 %I Institute for Environmental Nanotechnology %U https://doi.org/10.13074/jent.2016.03.161183