Ripoll, O.Herzig, H. P.Kettunen, V.2009-04-222009-04-222009-04-22200210.1364/DOMO.2002.DMD4https://infoscience.epfl.ch/handle/20.500.14299/37853Comparison of diffractive optical element types for far-field beam shapingtext::conference output::conference proceedings::conference paper