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.
© 1981 Optical Society of America
Michael M. Salour and Guillaume Petite, "Light-induced unidirectional light switching," Opt. Lett. 6, 584-586 (1981)