Dark solitons in laser radiation build-up dynamics.
Dark solitons in laser radiation build-up dynamics.
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DOI：
10.1103/physreve.93.032221
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发表时间：
2016-01
期刊：
影响因子：
--
通讯作者：
R. Woodward;E. Kelleher
中科院分区：
文献类型：
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作者：
R. Woodward;E. Kelleher
我们揭示了在全正常色散锁模光纤激光器中明亮脉冲的辐射积累动力学中存在缓慢衰减的暗孤子，并在广义非线性Schrödinger方程的框架中进行了数值模拟。研究了噪声扰动对准平稳暗孤子的演化，确定了背景形状和孤子-孤子碰撞对最终孤子衰变的重要意义。我们证明了恢复力在将保守系统中的孤子相互作用扩展到包括激光腔中遇到的耗散效应方面的作用，并将我们的观察推广到其他非线性系统。
We reveal the existence of slowly decaying dark solitons in the radiation build-up dynamics of bright pulses in all-normal dispersion mode-locked fiber lasers, numerically modeled in the framework of a generalized nonlinear Schrödinger equation. The evolution of noise perturbations to quasistationary dark solitons is examined, and the significance of background shape and soliton-soliton collisions on the eventual soliton decay is established. We demonstrate the role of a restoring force in extending soliton interactions in conservative systems to include the effects of dissipation, as encountered in laser cavities, and generalize our observations to other nonlinear systems.