Bifurcation to polarization self-modulation in vertical-cavity surface-emitting lasers.
Experiments have yielded polarization self-modulation in vertical-cavity surface-emitting lasers (VCSELs) subject to a pi/2 polarization-rotating optical feedback. The phenomenon has been simulated numerically, but its bifurcation has never been explained. We show that polarization self-modulation results from a Hopf bifurcation mechanism that can be analyzed in terms of the laser feedback parameters. Our analysis predicts other bifurcations for low values of the feedback rate, which explain why more-complex time-dependent outputs have been observed as alternatives to polarization self-modulation.
Sciamanna
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M
Rogister
F
F
Deparis
O
O
Mégret
P
P
Blondel
M
M
Erneux
T
T