Breather Molecular Complexes in a Passively Mode-Locked Fiber Laser,Laser & Photonics Reviews

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Breather Molecular Complexes in a Passively Mode-Locked Fiber Laser
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2021-06-09 , DOI: 10.1002/lpor.202000132
Junsong Peng _{1,

2} , Zihan Zhao ₁ , Sonia Boscolo ₃ , Christophe Finot ₄ , Srikanth Sugavanam ₃ , Dmitry V. Churkin ₅ , Heping Zeng _{1,

2}

Affiliation

Breathing solitons are nonlinear waves in which the energy concentrates in a localized and oscillatory fashion. Similarly to stationary solitons, breathers in dissipative systems can form stable bound states displaying molecule-like dynamics, which are frequently called breather molecules. So far, the experimental observation of optical breather molecules and the real-time detection of their dynamics are limited to diatomic molecules, that is, bound states of only two breathers. In this work, the observation of different types of breather complexes in a mode-locked fiber laser: multibreather molecules, and molecular complexes originating from the binding of two breather-pair molecules or a breather pair molecule and a single breather is reported. The intermolecular temporal separation of the molecular complexes attains several hundreds of picoseconds, which is more than an order of magnitude larger than that of their stationary soliton counterparts and is a signature of long-range interactions. Numerical simulations of the laser model support the experimental findings. Moreover, nonequilibrium dynamics of breathing solitons are also observed, including breather collisions and annihilation. This work opens the possibility of studying the dynamics of many-body systems in which breathers are the elementary constituents.

中文翻译：

被动锁模光纤激光器中的呼吸分子复合物

呼吸孤子是非线性波，其中能量以局部和振荡方式集中。与静止孤子类似，耗散系统中的呼吸器可以形成稳定的束缚态，显示出类似分子的动力学，通常称为呼吸器分子。迄今为止，对光学呼吸器分子的实验观察及其动力学的实时检测仅限于双原子分子，即只有两个呼吸器的束缚态。在这项工作中，报告了对锁模光纤激光器中不同类型的呼吸器复合物的观察：多呼吸器分子，以及源自两个呼吸器对分子或一个呼吸器对分子与单个呼吸器的结合的分子复合物。分子复合物的分子间时间间隔达到数百皮秒，这比它们的静止孤子对应物大一个数量级以上，是长程相互作用的标志。激光模型的数值模拟支持实验结果。此外，还观察到呼吸孤子的非平衡动力学，包括呼吸碰撞和湮灭。这项工作开启了研究以呼吸器为基本成分的多体系统动力学的可能性。还观察到呼吸孤子的非平衡动力学，包括呼吸碰撞和湮灭。这项工作开启了研究以呼吸器为基本成分的多体系统动力学的可能性。还观察到呼吸孤子的非平衡动力学，包括呼吸碰撞和湮灭。这项工作开启了研究以呼吸器为基本成分的多体系统动力学的可能性。

更新日期：2021-07-08

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