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Phys. Rev. Lett. 87, 243901 (2001) [4 pages]

Dynamics of Semiconductor Lasers Subject to Delayed Optical Feedback: The Short Cavity Regime

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T. Heil, I. Fischer, and W. Elsäßer
Institut für Angewandte Physik, Technische Universität, Darmstadt, Schloßgartenstraße 7, D-64289 Darmstadt, Germany

A. Gavrielides
Nonlinear Optics Center, Air Force Research Laboratory AFRL/DELO, 3550 Aberdeen Avenue SE, Kirtland AFB, New Mexico 87117-5776

Received 15 February 2001; published 19 November 2001

We give experimental and numerical evidence for a new dynamical regime in the operation of semiconductor lasers subject to delayed optical feedback occurring for short delay times. This short cavity regime is dominated by a striking dynamical phenomenon: regular pulse packages forming a robust low-frequency state with underlying fast, regular intensity pulsations. We demonstrate that these regular pulse packages correspond to trajectories moving on global orbits comprising several destabilized fixed points within the complicated phase space structure of this delay system.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.87.243901
DOI:
10.1103/PhysRevLett.87.243901
PACS:
42.65.Sf, 05.45.Jn, 42.55.Px