title: All-photoinduced terahertz optical activity.
abstract: We proposed and demonstrated active control of terahertz optical activity via chiral patterned photoexcitation in a semiconductor with a spatial light modulator (SLM). Arbitrary patterns can be generated by a SLM, including completely symmetric enantiomer pairs. This technique provides a new route to terahertz polarization modulators.
authors.forename: Natsuki
authors.initials: N
authors.lastname: Kanda
authors.forename: Kuniaki
authors.initials: K
authors.lastname: Konishi
authors.forename: Makoto
authors.initials: M
authors.lastname: Kuwata-Gonokami
mesh_terms: D004867:Equipment Design; D008027:Light; D055096:Optical Devices; D055620:Optical Phenomena; D009904:Optical Rotation; D012666:Semiconductors