Abstract

Positive branch unstable resonators with graded convex couplers are an attractive configuration to produce high-power single-mode lasers suited to ladar applications [1]. The purpose of this presentation is first, to determine the reflectivity profile which will optimize the energy extraction while maintaining single transverse mode oscillation and second, to demonstrate that graded mirrors can be used to make high-power coherent TE-CO₂ emitters when single longitudinal mode operation is achieved by injection seeding [2].

© 1987 Optical Society of America