Media 2: New basis for rotationally symmetric nonparaxial fields in terms of spherical waves with complex foci Miguel A. Alonso Riccardo Borghi Massimo Santarsiero 10.1364/OE.14.006894.m002 https://opticapublishing.figshare.com/articles/media/Media_2_New_basis_for_rotationally_symmetric_nonparaxial_fields_in_terms_of_spherical_waves_with_complex_foci/4934570 Originally published in Optics Express on 24 July 2006 (oe-14-15-6894) 2006-07-24 00:00:00 24 July 2006 basis media oe Optics Express term foci New nonparaxial fields