2022/07/27 by Robbe de Mey, Spencer W. Jolly, de Mey, Robbe +5
Computer Science · Engineering · Physics and Astronomy · #Applied Physics (physics.app-ph) #Chaotic Dynamics (nlin.CD) #FOS: Physical sciences #Nonlinear Dynamics and Pattern Formation #Optics (physics.optics) #Quantum optics and atomic interactions #Semiconductor Lasers and Optical Devices
paper · doi:10.48550/arxiv.2207.13322
openalex publication_date 2022/07/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We experimentally study a semiconductor laser subject to two optical feedbacks in a free space setup. We show that the time delay signature, manifesting itself in the chaotic output intensity, can be better suppressed than in a laser with single feedback. We demonstrate that the control of the feedback phase is essential to suppress the time delay signature, in contrast to the one-delay case, and that the feedback phase also impacts the chaotic bandwidth. By optimizing the feedback phase the time delay signature can be reduced by a factor of 2 while maintaining a large chaotic bandwidth.