Berlin : Weierstraß-Institut für Angewandte Analysis und Stochastik
Doi
Abstract
Using a delay differential equation model with two time delays, we
investigate the dynamics of a semiconductor laser with an active cavity
coupled to an external passive cavity. Our numerical simulations indicate
that when the coupling between the two cavities is strong enough and the
round-trip time of the active cavity is an integer multiple of the round-trip
time of the external passive cavity, a harmonic mode-locking regime can
develop in the laser with the pulse repetition period close to the passive
cavity round trip time. We also demonstrate that the output field intensity
sensitively depends on the relative phase between the electric fields in the
two cavities giving rise to a resonant behavior. The period and width of the
resonances depend on the ratio of the round-trip times and the coupling
between the two cavities. We show that the coupled cavity system under
consideration can demonstrate a bistability between different regimes of
generation