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40 GHz mode-locked semiconductor lasers: Theory, simulations and experiment

: Bandelow, U.; Radziunas, M.; Vladimirov, A.; Hüttl, B.; Kaiser, R.


Special issue on physics and applications of semiconductor lasers : Workshop PHASE, which took place in Supélec, Metz (France) on March 29 - 30, 2006, Workshop Physics and Applications of Semiconductor Lasers
Dordrecht: Kluwer, 2006 (Optical and quantum electronics 38.2005, Nr.4/6)
ISSN: 0306-8919
Workshop Physics and Applications of Semiconductor Lasers (Phase) <2006, Supélec, Metz>
Conference Paper, Journal Article
Fraunhofer HHI ()

We study both theoretically and experimentally typical operation regimes of 40 GHz monolithic mode-locked lasers. The underlying Traveling Wave Equation model reveals quantitative agreement for characteristics of the fundamental mode-locking as pulse width and repetition frequency tuning, as well as qualitative agreement with the experiments for other dynamic regimes. Especially the appearance of stable harmonic mode-locking at 80 GHz has been predicted theoretically and confirmed by measurements. Furthermore, we derive and apply a simplified Delay-Differential-Equation model which guides us to a qualitative analysis of bifurcations responsible for the appearance and the breakup of different mode-locking regimes. Higher harmonics of mode-locking are predicted by this model as well.