Volume 64, Number 2, October 2003
|Page(s)||178 - 184|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||01 November 2003|
Ghost resonance in a semiconductor laser with optical feedback
Departament de Física i Enginyeria Nuclear,
Universitat Politècnica de Catalunya
Colom 11, E-08222 Terrassa, Spain
2 Departament de Física, Universitat de les Illes Balears E-07122 Palma de Mallorca, Spain
3 Department of Physiology, Northwestern University - Chicago, IL, 60611, USA
4 Center for Applied Mathematics, Cornell University - Ithaca, NY 14854, USA
Accepted: 8 August 2003
We show both experimentally and numerically a ghost resonance in the sudden power dropouts exhibited by a semiconductor laser subject to optical feedback driven by two simultaneous weak periodic signals. The small signal modulation conspires with the complex internal dynamics of the system to produce a resonance at a ghost frequency, i.e. a frequency that is not present in the driving signals. This is an eminently nonlinear effect not reported before and agrees with the recent theoretical predictions by Chialvo et al. (Phys. Rev. E, 65 (2002) 050902(R)).
PACS: 42.65.Sf – Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics / 05.45.-a – Nonlinear dynamics and nonlinear dynamical systems
© EDP Sciences, 2003
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