Share Email Print
cover

Proceedings Paper

Pulse train control in an excitable micropillar laser with delayed optical feedback (Conference Presentation)
Author(s): Soizic Terrien; Bernd Krauskopf; Neil G. R. Broderick; Louis Andréoli; Foued Selmi; Grégoire Beaudoin; Isabelle Sagnes; Sylvain Barbay
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Recent experiments with an excitable VCSEL micropillar laser with delayed optical feedback demonstrated that the system is able to sustain trains of optical pulses. The laser has two layers of gain and one layer of absorption in the VCSEL cavity, and it is an excitable single longitudinal and transverse mode laser. With optical feedback, a past pulse can trigger a new pulse, creating a pulse train with repetition rate given by the delay time. It is possible to trigger and retime pulses by appropriate external perturbations, in the form of appropriately timed short optical pulses. In particular, several pulse trains can be triggered independently by optical perturbations, and sustained simultaneously in the external cavity, with different timing in between pulses. Such dynamics are also called localised structures, and are investigated here theoretically. It has been verified experimentally and theoretically that the phase of the electric field is not relevant. The Yamada model – a well-established system of ordinary differential equations for intensity, gain and absorption – is thus a suitable model. As we show, the Yamada model with delayed intensity feedback describes the pulsing micropillar laser system in good agreement with the experiment. A bifurcation analysis of this model shows that several pulsing periodic solution with different repetition rates coexist and are stable. Although coexisting pulse trains can seem independent on the timescale of the experiment, we show that they correspond here to extremely long transient dynamics toward one of the stable periodic solutions, with equidistant pulses.

Paper Details

Date Published: 14 March 2018
PDF
Proc. SPIE 10515, Vertical External Cavity Surface Emitting Lasers (VECSELs) VIII, 1051507 (14 March 2018); doi: 10.1117/12.2288047
Show Author Affiliations
Soizic Terrien, The Dodd-Walls Ctr. for Photonic and Quantum Technologies (New Zealand)
Bernd Krauskopf, The Dodd-Walls Ctr. for Photonic and Quantum Technologies (New Zealand)
The Univ. of Auckland (New Zealand)
Neil G. R. Broderick, The Dodd-Walls Ctr. for Photonic and Quantum Technologies (New Zealand)
The Univ. of Auckland (New Zealand)
Louis Andréoli, Ctr. de Nanosciences et de Nanotechnologies (France)
Univ. Paris-Sud (France)
Foued Selmi, Ctr. de Nanosciences et de Nanotechnologies (France)
Univ. Paris-Sud (France)
Univ. Paris-Saclay (France)
Grégoire Beaudoin, Ctr. de Nanosciences et de Nanotechnologies (France)
Univ. Paris-Sud (France)
Univ. Paris-Saclay (France)
Isabelle Sagnes, Ctr. de Nanosciences et de Nanotechnologies (France)
Univ. Paris-Sud (France)
Univ. Paris-Saclay (France)
Sylvain Barbay, Ctr. de Nanosciences et de Nanotechnologies (France)
Univ. Paris-Sud (France)
Univ. Paris-Saclay (France)


Published in SPIE Proceedings Vol. 10515:
Vertical External Cavity Surface Emitting Lasers (VECSELs) VIII
Juan L. Chilla, Editor(s)

© SPIE. Terms of Use
Back to Top