Andronov bifurcation and excitability in semiconductor lasers with optical feedback

Year: 1997

Authors: Giudici M., Green C., Giacomelli G., Nespolo U., Tredicce J.

Autors Affiliation: Institut Non Lineaire de Nice, Universite´ de Nice-Sophia-Antipolis, CNRS UMR, 06560 Valbonne, France;
Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: We experimentally investigate the dynamical behavior of a semiconductor laser with optical feedback. We show that noise plays an important role close to the instability threshold, while determinism controls the so-called coherence collapse regime. We identify the bifurcation which is at the origin of the low frequency fluctuations. It is the result of a collision between a stable fixed point and a saddle point ~Andronov’s bifurcation!. We provide experimental proof that the laser with optical feedback behaves as an excitable medium.

Journal/Review: PHYSICAL REVIEW E

Volume: 55 (6)      Pages from: 6414  to: 6418

KeyWords: Coherence Collapse; External-cavity; Instabilities; Injection
DOI: 10.1103/PhysRevE.55.6414

Citations: 179
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