TY - RPRT TI - Polar POLICRYPS diffractive structures generate cylindrical vector beams AU - Alj, Domenico AU - Caputo, Roberto AU - Umeton, Cesare AU - Paladugu, Sathyanarayana AU - Volpe, Giovanni PY - 2015 DO - 10.1063/1.4935605 UR - https://www.osti.gov/biblio/22486072 ID - 22486072 ER -