TY - JOUR TI - Tightly Focusing Properties of Radially Polarized Double Ring Shaped Beam through a Uniaxial Birefringent Crystal AU - R. Murugesan AU - D. ThiruArul AU - K. B. Rajesh PY - 2018 DO - 10.13074/jent.2018.03.182309 T2 - Journal of Environmental Nanotechnology JF - Journal of Environmental Nanotechnology JA - J. Environ. Nanotechnol. SP - 18 EP - 25 VL - 7 IS - 2 PB - Institute for Environmental Nanotechnology ER -