Pulse dynamics in SESAM-free electrically pumped VECSEL

Abstract

Self-starting pulsed operation in an electrically pumped (EP) vertical-external-cavity surface-emitting-laser (VECSEL) without intracavity saturable absorber is demonstrated. A linear hemispherical cavity design, consisting of the EP-VECSEL chip and a 10% output-coupler, is used to obtain picosecond output pulses with energies of 2.8 pJ and pulse widths of 130 ps at a repetition rate of 1.97 GHz. A complete experimental analysis of the generated output pulse train and of the transition from continuous-wave to pulsed operation is presented. Numerical simulations based on a delay-differential-equation (DDE) model of mode-locked semiconductor lasers are used to reproduce the pulse dynamics and identify different laser operation regimes. From this, the measured single pulse operation is attributed to FM-type mode-locking. The pulse formation is explained by strong amplitude-phase coupling and spectral filtering inside the EP-VECSEL.

Publication DOI: https://doi.org/10.1364/OE.385619
Divisions: Engineering & Applied Sciences > Aston Institute of Photonics Technology
Additional Information: Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funding: Engineering and Physical Sciences Research Council (EP/R024898/1); Alexander von HumboldtStiftung; H2020 Marie Skłodowska-Curie Actions (843801); Ministry of Education and Science of the Russian Federation (Passport No. 2019-1442).
Uncontrolled Keywords: Atomic and Molecular Physics, and Optics
Full Text Link:
Related URLs: https://www.osa ... I=oe-28-9-13466 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2020-04-20
Accepted Date: 2020-02-25
Authors: Chichkov, Nikolai B.
Yadav, Amit
Kovalev, Anton V.
Smirnov, Semyon V.
Herper, Markus
Fedorova, Ksenia A.
Viktorov, Evgeny A.
Rafailov, Edik U. ( 0000-0002-4152-0120)

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