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Q: Fachverband Quantenoptik und Photonik

Q 8: Laser development and applications II

Q 8.4: Vortrag

Montag, 17. März 2014, 14:45–15:00, DO26 207

Timing Jitter Reduction of Mode-locked Quantum-Dot Lasers by Optical Feedback — •Oleg Nikiforov, Lukas Drzewietzki, Stefan Breuer, and Wolfgang Elsässer — Institute of Applied Physics, Technische Universität Darmstadt, Darmstadt, Germany

Investigations on the timing jitter (TJ) reduction of passively mode-locked monolithic quantum-dot (QD) semiconductor lasers by optical feedback (FB) allows to study the potential of QD lasers towards application as high-resolution photonic analog-to-digital converters or optical interconnects. Recently, the relevant mechanism of TJ reduction has been identified that is based on a statistical origin [1]. Here, we comprehensively study experimentally the effect of FB on TJ and pulse width as a function of FB strength and FB delay time and discuss the emission dynamics on the basis of a simple time-domain model. In addition, investigation on a multiple simultaneous FB configuration is presented. Thus, we provide a deeper insight into the underlying mechanism of TJ reduction and identify related ideal FB conditions. [1] L. Drzewietzki, S. Breuer and W. Elsäßer, Timing jitter reduction of passively mode-locked semiconductor lasers by self- and external-injection: Numerical description and experiments, Optics Express, Vol. 21, Issue 13, pp. 16142-16161 (2013)