Synchronization of coupled semiconductor lasers

Angela Hohl-Abichedid, Thomas Erneux, Athanasios Gavrielides, Vassilios Kovanis

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


The dynamics of two mutually coupled semiconductor lasers is studied experimentally and numerically for weak coupling. The two lasers are pumped at different levels and have dissimilar free-running relaxation oscillation frequencies and intensities. We have found that the two lasers exhibit large amplitude intensity oscillations for one laser and small amplitude intensity oscillations for the other laser. In our previous work, we studied the effect of the coupling strength. In this paper, we keep the coupling strength fixed and examine the effect of the detuning between the optical frequencies. As the detuning comes close to a multiple of the relaxation oscillation frequency of one of the two lasers, we observe the amplification of the intensities due to resonance and synchronization. Our experimental observations of the laser spectra are in good agreement with the numerical spectra and bifurcation diagrams computed from the semiconductor laser rate equations.

Original languageEnglish
Pages (from-to)546-554
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - Dec 1 1998
Externally publishedYes
EventPhysics and Simulation of Optoelectronic Devices VI - San Jose, CA, United States
Duration: Jan 26 1998Jan 26 1998


  • Coupled lasers
  • Nonlinear dynamics
  • Semiconductor arrays

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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