The quantum well semiconductor laser has been shown to be the semiconductor laser of choice for efficiency and thereby high power applications. The key advantage of nonlinear devices fabricated in quantum well waveguides is that they can be easily integrated with quantum well lasers. Nonlinear optical effects in GaAsAlGaAs quantum wells have been of considerable interest for sometime. In guided-wave formats some nonlinear devices have been demonstrated a nonlinear directional coupler has been fabricated and characterised, and a saturable absorber for a mode-locking semiconductor laser has also been demonstrated.
This article is from 'OSA Proceedings of the Topical Meeting on Nonlinear Guided-Wave Phenomena Held in 2-4 September 1991. Cambridge, England United Kingdom. Volume 15', AD-A253 471, p208-211.