2019/05/27 by Ki Sang Lee, Chang Kyun Ha, Lee, Ki Sang +7
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #Laser Design and Applications #Laser-Matter Interactions and Applications #Optics (physics.optics) #Pattern Formation and Solitons (nlin.PS)
paper · pdf · doi:10.48550/arxiv.1905.11189
openalex publication_date 2019/05/27 · openalex created_date 2022/07/29 · openalex updated_date 2026/07/28
A variety of nonequilibrium multi-pulse states can emerge in a mode-locked\nlaser through the interactions between the quasi-continuous-wave background\n(qCWB) and optical pulses inside the laser cavity. However, they have been long\nregarded as unpredictable and hardly controllable due to the noise-like nature\nof the qCWB, and relevant previous studies thus lack a clear understanding of\ntheir underlying mechanisms. Here, we demonstrate that the qCWB landscape can\nbe manipulated via optoacoustically mediated interactions between the qCWB and\nmode-locked pulses, which dramatically alters the behaviors of multi-pulse\ndynamics in unprecedented manners. In this process, impulsive qCWB modulations\nare created at well-defined temporal locations, which act as the point emitters\nand attractive potentials for drifting pulse bunches and soliton rains. Hence,\nwe can transport a single pulse bunch from a certain temporal position to\nanother on the qCWB, and also make the soliton rain created and collided\nexclusively at specific temporal locations, in sharp contrast to the\nconventional cases. Our study opens up new possibilities to control the\nnonequilibrium multi-pulse phenomena precisely in the time domain, which would\nnot only help the observation and clear understanding of undiscovered features\nof multi-pulse dynamics but offer a practical means of advanced optical\ninformation processing.\n