Fig. 20: Metrology and astronomy using OVs.
From: Optical vortices 30 years on: OAM manipulation from topological charge to multiple singularities
a VBs can be used to detect the spin motion of an object285. b Twisted light can be used for label-free single-molecule detection287. c VBs can be used with plasmonic nanoslit structures for multi-channel OAM generation and detection291. d Vortex generation around a rotating black hole302. e–g Imaging of an OV coronagraph297. a From ref. 285. Reprinted with permission from AAAS. b Reprinted by permission from Springer Nature: Nature Materials287, Copyright (2019). c Reprinted with permission from ref. 291. Copyright (2019) by John Wiley and Sons. d Reprinted by permission from Springer Nature: Nature Physics302, Copyright (2019). e–g Reprinted with permission from ref. 297, OSA Publishing
