Visualization 2: Focusing light with orbital angular momentum by circular array antenna Takashi Arikawa Shohei Morimoto Koichiro Tanaka 10.1364/OE.25.013728.v002 https://opticapublishing.figshare.com/articles/media/Visualization_2_Focusing_light_with_orbital_angular_momentum_by_circular_array_antenna/5154322 Electric field distribution of the vortex beam measured in time-domain. Originally published in Optics Express on 12 June 2017 (oe-25-12-13728) 2017-06-12 00:00:00 Visualization array antenna Electric field distribution vortex beam Optics Express time-domain momentum 12 June 2017 oe