TY - JOUR TI - Generation of Sub Wavelength Focal Hole Segment using Azimuthally Polarized Higher Order Beam by High NA Parabolic Mirror AU - V. Senthilkumar AU - N.Umamageswari AU - M.Udhayakumar AU - K.B. Rajesh PY - 2016 DO - 10.13074/jent.2016.03.161184 T2 - Journal of Environmental Nanotechnology JF - Journal of Environmental Nanotechnology JA - J. Environ. Nanotechnol. SP - 13 EP - 16 VL - 5 IS - 1 PB - Institute for Environmental Nanotechnology ER -