EFFECT OF PYRAGAS FEEDBACK ON THE DYNAMICS OF A Q-SWITCHED LASER

A linear analysis is made of the stability of the limit cycle in a Q-s witched laser with continuous delayed feedback which controls the onse t of instability. The Stokes generalization of the Floquet theory for the functional equations was used to derive a general equation to dete rmine the Andronov-Hopf bifurcations and also saddle-node and subharmo nic bifurcations. Conditions for stabilization of T-periodic regimes w ere determined and possible destabilizing effects introduced by the fe edback were identified. (C) 1997 American Institute of Physics.