Stabilizing continuous-wave output in semiconductor lasers by time-delayed feedback

Details Stabilizing continuous-wave output in semiconductor lasers by time-delayed feedback Stabilizing continuous-wave output in semiconductor lasers by time-delayed feedback

2008-09-04

arxiv.org/abs/0809.0796v2

Nonlinear Sciences

Chaotic Dynamics

12 pages, 17 figures

Scientific paper

10.1103/PhysRevE.78.056213

The stabilization of steady states is studied in a modified Lang-Kobayashi model of a semiconductor laser. We show that multiple time-delayed feedback, realized by a Fabry-Perot resonator coupled to the laser, provides a valuable tool for the suppression of unwanted intensity pulsations, and leads to stable continuous-wave operation. The domains of control are calulated in dependence on the feedback strength, delay time (cavity round trip time), memory parameter (mirror reflectivity), latency time, feedback phase, and bandpass filtering, Due to the optical feedback, multistable behavior can also occur in the form of delay-induced intensity pulsations or other modes for certain choices of the control parameters. Control may then still be achieved by slowly ramping the injection current during turn-on.

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