Dresden 2017 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 64: Poster: Photovoltaics and Optics
HL 64.40: Poster
Mittwoch, 22. März 2017, 15:00–19:00, P1C
Optical feedback stabilization of a passively mode-locked multi quantum well semiconductor laser emitting at 1070 nm — •Dominik Auth1, Christoph Weber1, Andreas Klehr2, Andrea Knigge2, and Stefan Breuer1 — 1Institute of Applied Physics, Applied Semiconductor Optics and Photonics, Technische Universität Darmstadt, Schlossgartenstr. 7, 64289 Darmstadt, Germany — 2Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, 12489 Berlin, Germany
Passively mode-locked semiconductor lasers emitting at 1070 nm are compact photonic sources for multi-GHz repetition rates and for high-speed data transmission where excellent pulse train stability in time and amplitude are demanded. Timing and amplitude stability (AJ) investigations were performed recently in C. Weber et al., Internat. Conf. on Transparent Optical Networks 2016, We.P.30. In this contribution we study experimentally the influence of self-feedback by an external optical fiber cavity on the mode-locking dynamics of a multi-section narrow ridge quantum-well (QW) laser with an active InGaAs double QW embedded in GaAsP spacer layers. We focus on the timing and amplitude stability improvement by single optical feedback and quantify this improvement by radio-frequency domain, temporal and optical domain analysis in dependence on the feedback delay and feedback strength. The obtained results are compared to investigations performed on the pulse train stability of an InGaAs quantum dot laser emitting at 1250 nm.