Fast Gain Dynamics in Interband Cascade Lasers

IF 9.8 1区物理与天体物理 Q1 OPTICS Laser & Photonics Reviews Pub Date : 2024-11-04 DOI:10.1002/lpor.202400867

Florian Pilat, Andreas Windischhofer, Maximilian Beiser, Vito F. Pecile, Elizaveta Gangrskaia, Audrius Pugžlys, Robert Weih, Johannes Koeth, Andrius Baltuška, Oliver H. Heckl, Benedikt Schwarz

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Abstract

Interband Cascade Lasers (ICL) have matured into a versatile technological platform in the mid-infrared spectral domain. To broaden their applicability even further, ongoing research pursues the emission of ultrashort pulses. The most promising approach is passive mode-locking with a fast saturable absorber. However, despite vast attempts no passive mode-locked ICL has been demonstrated up to date. In this study, pump-probe measurements are conducted on the ICL gain, demonstrating that

\approx $\approx$

60–70% of its dynamic behavior is characterized by a rapid recovery time of 2 ps. The findings explain why passive mode-locking of ICLs has not succeeded so far, shedding a new light on ICL dynamics as strategies are proposed to overcome the current limitations.

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带间级联激光器的快速增益动力学

带间级联激光器（ICL）已发展成为中红外光谱领域的多功能技术平台。为了进一步拓宽其应用范围，正在进行的研究致力于发射超短脉冲。最有前途的方法是使用快速可饱和吸收器进行无源模式锁定。然而，尽管进行了大量尝试，但迄今为止还没有证明无源模式锁定 ICL。在这项研究中，我们对 ICL 增益进行了泵探测量，结果表明其 60%-70% 的动态行为以 2 ps 的快速恢复时间为特征。这些发现解释了为什么迄今为止ICL的被动模式锁定还没有成功，为ICL动力学提供了新的思路，并提出了克服当前局限性的策略。

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来源期刊

Laser & Photonics Reviews 物理-光学

CiteScore

14.20

自引率

5.50%

发文量

314

审稿时长

2 months

期刊介绍： Laser & Photonics Reviews is a reputable journal that publishes high-quality Reviews, original Research Articles, and Perspectives in the field of photonics and optics. It covers both theoretical and experimental aspects, including recent groundbreaking research, specific advancements, and innovative applications. As evidence of its impact and recognition, Laser & Photonics Reviews boasts a remarkable 2022 Impact Factor of 11.0, according to the Journal Citation Reports from Clarivate Analytics (2023). Moreover, it holds impressive rankings in the InCites Journal Citation Reports: in 2021, it was ranked 6th out of 101 in the field of Optics, 15th out of 161 in Applied Physics, and 12th out of 69 in Condensed Matter Physics. The journal uses the ISSN numbers 1863-8880 for print and 1863-8899 for online publications.