Dynamics of localized and patterned structures in the Lugiato-Lefever equation determine the stability and shape of optical frequency combs
Parra-Rivas, P.; Gomila, D.; Matias, M.A.; Coen, S.; Gelens, L.
Physical Review A 89, 043813 (1-12) (2014)
It has been recently uncovered that coherent structures in microresonators such as cavity solitons
and patterns are intimately related to Kerr frequency combs. In this work, we present a general
analysis of the regions of existence and stability of cavity solitons and patterns in the Lugiato-Lefever
equation, a mean-field model that finds applications in many different nonlinear optical cavities.
We demonstrate that the rich dynamics and coexistence of multiple solutions in the Lugiato-Lefever
equation are of key importance to understanding frequency comb generation. A detailed map
of how and where to target stable Kerr frequency combs in the parameter space defined by the
frequency detuning and the pump power is provided. Moreover, the work presented also includes
the organization of various dynamical regimes in terms of bifurcation points of higher co-dimension
in regions of parameter space that were previously unexplored in the Lugiato-Lefever equation. We
discuss different dynamical instabilities such as oscillations and chaotic regimes.