Regensburg 2019 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 35: HL Poster II
HL 35.62: Poster
Mittwoch, 3. April 2019, 17:30–20:00, Poster E
Self mode-locked monolithic quantum dash lasers emitting at 1535 nm subject to optical self feedback by complex external cavity geometries — •Patrick Fiala1, Dominik Auth1, Christoph Weber1, Klara Maria Neumann1, Quentin Gaimard2, Abderrahim Ramdane2, and Stefan Breuer1 — 1Institute of Applied Physics, Technische Universität Darmstadt, Schlossgartenstraße 7, 64289 Darmstadt, Germany — 2Centre de Nanosciences et Nanotechnologies (C2N), CNRS, Marcoussis 91460, France
The impact of optical self feedback onto self mode-locked quantum dash lasers emitting at 1535 nm is investigated in dependence of feedback cavity geometry and varying optical feedback strengths. The linear external cavity with a broadband reflecting mirror is compared to a ring geometry [Haji et al., Opt. Express 20 (2012), 3268-74] and a teardrop geometry [Liu et al., Appl. Phys. Lett. 113 (2018), 041108]. These complex feedback geometries deliver bi-directionally propagating feedback signals. The experimental results are compared to a mono-directional self feedback geometry. The obtained experimental results are validated by applying a stochastic time-domain model [Drzewietzki et al., Opt. Express 21 (2013), 16142].