Asymmetric square waves in mutually coupled semiconductor lasers with orthogonal optical injection

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Asymmetric square waves in mutually coupled semiconductor lasers with orthogonal optical injection

David W. Sukow, Athanasios Gavrielides, Thomas Erneux, Benjamin Mooneyham, Karen Lee, Jake McKay, and Josiah Davis

Phys. Rev. E 81, 025206(R) – Published 25 February 2010

Abstract

Two edge-emitting lasers mutually coupled through orthogonal optical injection exhibit square-wave oscillations in their polarization modes. The TE and TM modes within each individual laser are always in antiphase, but the TE mode of one laser leads the TM of the other by the one-way time of flight between lasers. The duty cycle of the square waves is tunable with pump current and coupling strength, while the total period remains close to the roundtrip time. Numerical simulations give similar results and reveal the role of noise in stabilizing the oscillations.

Received 26 June 2009

DOI:https://doi.org/10.1103/PhysRevE.81.025206

Authors & Affiliations

David W. Sukow^1,*, Athanasios Gavrielides², Thomas Erneux³, Benjamin Mooneyham¹, Karen Lee¹, Jake McKay¹, and Josiah Davis¹

¹Department of Physics and Engineering, Washington and Lee University, 204 W. Washington St., Lexington, Virginia 24450, USA
²Air Force Research Laboratory, AFRL/EOARD, 86 Blenheim Crescent, Ruislip Middlesex HA4 7HB, United Kingdom
³Optique Nonlinéaire Théorique, Université Libre de Bruxelles, Campus Plaine, CP 231, 1050 Bruxelles, Belgium

^*sukowd@wlu.edu

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Issue

Vol. 81, Iss. 2 — February 2010

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