2015/09/02 by Yannis Kominis
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Beam (structure) #Classical mechanics #Compensation (psychology) #Computer science #Control theory (sociology) #Dynamic balance #Economics #Materials science #Mechanics #Nonlinear Photonic Systems #Nonlinear system #Optics #Photonic and Optical Devices #Physics #Position (finance) #Power (physics) #Power Balance #Range (aeronautics) #Refractive index #Stability (learning theory) #Trapping #nlin.PS #physics.optics
paper · pdf · doi:10.1103/physreva.92.063849
published as Phys. Rev. A 92, 063849 (2015) · 14 pages, 4 figures
arxiv created 2015/09/02 · openalex publication_date 2015/12/30 · arxiv updated 2016/06/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The presence of losses in nonlinear photonic structures necessitates the introduction of active parts for wave power compensation resulting in unbalanced gain and loss landscapes where localized beam propagation is, in general, dynamically unstable. Here we provide generic sufficient conditions for the relation between the gain-loss and the refractive index profiles in order to ensure efficient wave trapping and stable propagation for a wide range of beam launching conditions such as initial power, angle of incidence, and position. The stability is a consequence of an underlying dynamic power balance mechanism related to a conserved quantity of wave dynamics.