Two Ways of Generating CPL from a Sphere (IMAGE) Tokyo Institute of Technology Caption (a/c) Both left- and right-handed CPL are generated by the phase difference between two perpendicular electric dipoles, excited by the impact of the electron beam. (b/d) Left- and right-handed CPL is emitted at different angles because of the interference between electric dipoles and a magnetic dipole. Credit ACS Nano Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.