论文标题
基于多模纤维激光器中时空耗散孤子的分布式Kerr-Lens模式锁定
Distributed Kerr-Lens Mode-Locking Based on Spatiotemporal Dissipative Solitons in Multimode Fiber Lasers
论文作者
论文摘要
我们引入了一种在多模纤维激光器中稳定的时空孤子形成机制。这是基于空间分级的耗散，导致分布式的Kerr-Lens模式锁定。我们的分析涉及通用耗散质量质合的解决方案的解决方案。该方程在非线性物理学中具有广泛的应用，包括非线性光学器件，时空图案形成，等离子体动力学和Bose-Einstein冷凝物。我们证明，仔细控制耗散性和非疾病的物理机制会导致稳定（2+1）维消耗量孤子的自我出现。实现此类状态不需要在激光器中存在任何其他耗散性非线性，例如在Bose-Einstein凝结物中的非弹性散射。我们的方法允许通过连贯的局部结构（例如Ultrashort激光脉冲或Bose-Einstein冷凝物）收集稳定的能量（或“质量”）。
We introduce a mechanism of stable spatiotemporal soliton formation in a multimode fiber laser. This is based on spatially graded dissipation, leading to distributed Kerr-lens mode-locking. Our analysis involves solutions of a generalized dissipative Gross-Pitaevskii equation. This equation has a broad range of applications in nonlinear physics, including nonlinear optics, spatiotemporal patterns formation, plasma dynamics, and Bose-Einstein condensates. We demonstrate that careful control of dissipative and non-dissipative physical mechanisms results in the self-emergence of stable (2+1)-dimensional dissipative solitons. Achieving such a regime does not require the presence of any additional dissipative nonlinearities, such a mode-locker in a laser, or inelastic scattering in a Bose-Einstein condensate. Our method allows for stable energy (or "mass") harvesting by coherent localized structures, such as ultrashort laser pulses or Bose-Einstein condensates.
