TY - JOUR TI - Tight Focusing of Double-ring-shaped Azimuthally Polarized Beam Using High NA Lens Axicon AU - K. B. Rajesh AU - K. Lalithambigai AU - C. Mohana Sundaram AU - P. M. Anbarasan PY - 2014 DO - 10.13074/jent.2014.12.144129 T2 - Journal of Environmental Nanotechnology JF - Journal of Environmental Nanotechnology JA - J. Environ. Nanotechnol. SP - 39 EP - 42 VL - 3 IS - (Special Issue) PB - Institute for Environmental Nanotechnology ER -