title: Light-induced unidirectional light switching.
abstract: We report the first observation of a unidirectionally emitting medium obtained by the method of Doppler compensation by velocity-dependent light shifts. The emission can be switched on by a pulse of laser light. The properties of this light-switching technique are experimentally demonstrated.
authors.forename: M M
authors.initials: MM
authors.lastname: Salour
authors.forename: G
authors.initials: G
authors.lastname: Petite