TY - JOUR TI - Focusing Properties of Spirally Polarized Axisymmetric QBG Beams with 4pi Configuration AU - V. Senthilkumar AU - L.Banupriya AU - M. Udhayakumar AU - K.B. Rajesh PY - 2016 DO - 10.13074/jent.2016.03.161183 T2 - Journal of Environmental Nanotechnology JF - Journal of Environmental Nanotechnology JA - J. Environ. Nanotechnol. SP - 26 EP - 32 VL - 5 IS - 1 PB - Institute for Environmental Nanotechnology ER -