An acousto-optic modulator causes unidirectional operation of dye and Ti:sapphire ring lasers. The modulator has a low insertion loss in the cavity and can be used to switch the direction of the beam electronically. The ring-laser performance is characterized, and experiments to probe the origin of the unidirectional operation are described.
© 1987 Optical Society of America
Original Manuscript: March 23, 1987
Manuscript Accepted: June 25, 1987
Published: September 1, 1987
R. Roy, P. A. Schulz, and A. Walther, "Acousto-optic modulator as an electronically selectable unidirectional device in a ring laser," Opt. Lett. 12, 672-674 (1987)