论文标题

在V形模式锁定的Vecsels中的相位不连贯的光子分子

Phase incoherent photonic molecules in V-shaped mode-locked VECSELs

论文作者

Hausen, Jan, Meineck, Stefan, Javaloyes, Julien, Gurevich, Svetlana V., Lüdge, Kathy

论文摘要

由增益芯片组成的被动模式锁定的垂直外腔表面发射半导体激光器(vecsels)和可半导体可饱和吸收剂,由于其出色的性能数字,人们引起了很多关注。在这项工作中,我们研究了如何使用V形腔几何形状在长腔vecsels中出现局部结构和不连贯的,非局部结合的脉冲分子。我们表明,这些状态与激光脱离状态相关,并且它们是可以单独寻址的。使用基于延迟微分方程的模型,我们证明了脉冲簇是由腔几何形状以及与增益介质的非本地耦合产生的。这导致局部独立但全球结合的相位,不一致的光子分子。使用多个时间尺度分析,我们得出了该场的振幅方程,使我们能够分析群集元素之间的距离。

Passively mode-locked vertical external-cavity surface-emitting semiconductor lasers (VECSELs) composed of a gain chip and a semiconductor saturable absorber have been drawing much attention due to their excellent performance figures. In this work we investigate how localized structures and incoherent, non-locally bound, pulse molecules emerge in a long cavity VECSELs using a V-shaped cavity geometry. We show that these states are bistable with the laser off state and that they are individually addressable. Using a model based upon delay differential equations, we demonstrate that pulse clusters result from the cavity geometry and from the non-local coupling with the gain medium; this leads to locally independent, yet globally bound phase, incoherent photonic molecules. Using a multiple time-scale analysis, we derive an amplitude equation for the field that allows us to predict analytically the distance between the elements of a cluster.

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