期刊
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
卷 27, 期 10, 页码 2102-2109出版社
OPTICAL SOC AMER
DOI: 10.1364/JOSAB.27.002102
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- Deutsche Forschungsgemeinschaft (DFG) [SFB787]
- Federal Programme Scientists of Innovative Russia [2009-1.5-507-007]
Operation regimes of a two section monolithic quantum dot (QD) mode-locked laser are studied experimentally with InGaAs lasers and theoretically, using a model that takes into account carrier exchange between QD ground state and two-dimensional reservoir of a QD-in-a-well structure. It is shown analytically and numerically that, when the absorber section is long enough, the laser exhibits bistability between laser off state and different mode-locking regimes. The Q-switching instability leading to slow modulation of the mode-locked pulse peak intensity is completely eliminated in this case. When, on the contrary, the absorber length is rather short, in addition to usual Q-switched mode-locking, pure Q-switching regimes are predicted theoretically and observed experimentally. (C) 2010 Optical Society of America
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