工作波长为 2.3 μm 的无源 Q 开关 Tm:LiYF4 激光器中 3H4 → 3H5 转变的混沌动力学

IF 5.4 1区物理与天体物理 Q1 OPTICS

APL Photonics Pub Date : 2024-09-05 DOI:10.1063/5.0220220

Hippolyte Dupont, Matthieu Glasset, Pavel Loiko, Patrick Georges, Frédéric Druon

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引用次数: 0

摘要

我们报告了在 3H4 → 3H5 转变上运行的被动 Q 开关 2.3-μm 铥激光器中的混沌动力学。实验利用了 Tm:LiYF4 晶体和各种激光腔配置，包括 1.9 μm 处 3F4 → 3H6 转变的可选级联激光。采用的可饱和吸收体是 Cr2+:ZnSe，它完全被 2.3 μm 激光饱和。对 Q 开关动力学的分析表明，激光运行明显倾向于不稳定和混乱的行为。为了了解这种混沌的起源，我们在 1.9 μm 波长处通过级联激光操作来监测可陨落的 3F4 水平的数量，并将这一变量作为研究混沌不稳定性的有趣参数。

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Chaotic dynamics in passively Q-switched Tm:LiYF4 laser operating at 2.3 μm on the 3H4 → 3H5 transition

We report on the chaotic dynamics in a passively Q-switched 2.3-μm thulium laser operating on the 3H4 → 3H5 transition. The experiment exploits a Tm:LiYF4 crystal and various laser cavity configurations, involving an optional cascade laser on the 3F4 → 3H6 transition at 1.9 μm. The saturable absorber employed is Cr2+:ZnSe, which is exclusively saturated by the 2.3 μm laser. An analysis of the Q-switched dynamics shows a pronounced inclination of the laser operation toward the unstable and chaotic behavior. To understand the origins of this chaos, we monitor the population of the metastable 3F4 level via cascade laser operation at 1.9 μm, underlying this variable as an interesting parameter to survey chaotic instabilities.

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来源期刊

APL Photonics Physics and Astronomy-Atomic and Molecular Physics, and Optics

CiteScore

10.30

自引率

3.60%

发文量

107

审稿时长

19 weeks

期刊介绍： APL Photonics is the new dedicated home for open access multidisciplinary research from and for the photonics community. The journal publishes fundamental and applied results that significantly advance the knowledge in photonics across physics, chemistry, biology and materials science.