David Goulding

TL;DR: Theoretical considerations show that the appearance of single- and double-pulse excitability at one boundary of the locking region are related to a saddle-node bifurcation on a limit cycle as in the Adler equation.

TL;DR: The nature of the locking boundaries is investigated, revealing features more commonly associated with Class A lasers rather than conventional Class B SLs and the Hopf and saddle-node locking boundaries that explain how the experimentally observed phenomena appear.

TL;DR: The effects of the delayed feedback are observed in the probability distribution of the residence times of the two orthogonal polarization states, and in the polarization-resolved power spectrum, and they agree well with recent theoretical predictions based on a two-state model with transition rates depending on an earlier state of the system.

TL;DR: The first observation of excitable pulses near the locking boundaries for both positive and negative detuning is reported, indicating locking via a saddle-node bifurcation for both signs of the detuning.

TL;DR: In this paper, an interferometric method for obtaining phasor plots of an optically injected laser is described and corresponding numerical plots are obtained for comparison yielding excellent quantitative agreement, and an extension of the technique to obtain 3D plots by incorporating a measurement of the gain is also described and applied to an injected quantum dot laser.