TY - JOUR TI - Focusing Properties of Double Ring Shaped Cylindrical Vector Beam by High NA Parabolic Mirror AU - K. B. Rajesh AU - N. Umamageswari AU - M. Udhayakumar AU - Haresh M.Pandya PY - 2014 DO - 10.13074/jent.2014.12.144124 T2 - Journal of Environmental Nanotechnology JF - Journal of Environmental Nanotechnology JA - J. Environ. Nanotechnol. SP - 15 EP - 20 VL - 3 IS - (Special Issue) PB - Institute for Environmental Nanotechnology ER -