MODE-LOCKING IN LARGE MONOLITHIC SEMICONDUCTOR RING LASERS

The passive mode-locking properties of large, monolithic semiconductor ring lasers have been studied both theoretically and experimentally. By using a computer simulation based on the traveling-wave model, the operating conditions under which mode locking may be achieved have bee n determined. Three different configurations of intracavity saturable absorber have been used, and the dual-absorber arrangement shown to be superior in having greater range of operation and shorter pulse width . Experimental confirmation of mode-locked operation has been obtained . (C) 1998 Society of Photo-Optical Instrumentation Engineers.