On the basis of theory and experiment we discuss the strong optical asymmetry in reflection exhibited by an interference wedge when it is constructed of unequal-reflectivity mirrors and show how this feature can be used to develop attractive unidirectional ring lasers. In the proposed ring cavity schemes a single interference wedge is employed simultaneously as a tuning element, as an element introducing asymmetry, and as a laser output coupler.
© 1994 Optical Society of America
E. Stoykova and M. Nenchev, "Strong optical asymmetry of an interference wedge with unequal-reflectivity mirrors and its use in unidirectional ring laser designs," Opt. Lett. 19, 1925-1927 (1994)