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arXiv 1503.04382physics.optics
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耦合激光器中的逆游标效应

Inverse Vernier Effects in Coupled Lasers

Li Ge, Hakan E. Tureci

摘要:

本文研究了双腔耦合激光系统中的游标效应。我们表明,根据其耦合的性质,不仅可以在耦合腔的重叠谐振处形成的“超模”具有最低的阈值和激光第一,如前所述,导致现在在一个活跃的系统中的典型的游标效应的表现;这些超模也可以具有增加的阈值,因此被抑制,这可以被视为逆游标效应。我们将这种效应归因于失谐相关的Q破坏,它可以导致自由光谱范围的增加和可能的单模激光,这可以解释以前的几项工作的实验结果。我们使用两个耦合的微环腔和一个微环腔耦合到一个板条腔来说明这种效应,并讨论了它与耦合激光器中例外点的存在的关系。

英文摘要:

In this report we study the Vernier effect in coupled laser systems consisting of two cavities. We show that depending on the nature of their coupling, not only can the "supermodes" formed at the overlapping resonances of the coupled cavities have the lowest thresholds and lase first as previously suggested, leading to a manifestation of the typical Vernier effect now in an active system; these supermodes can also have increased thresholds and are hence suppressed, which can be viewed as an inverse Vernier effect. We attribute this effect to detuning-dependent Q-spoiling, and it can lead to an increased free spectrum range and possibly single-mode lasing, which may explain the experimental findings of several previous work. We illustrate this effect using two coupled micro-ring cavities and a micro-ring cavity coupled to a slab cavity, and we discuss its relation to the existence of exceptional points in coupled lasers.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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