基于二氧化碳双光子吸收的长波红外激光器的快速调制

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED Applied Physics Letters Pub Date : 2024-11-20 DOI:10.1063/5.0242976

Zhenzhen Xie, Zhiyong Li, Ziren Zhu, Yu Liu, Hai Wang, Ziming Wang, Fangjin Ning, Hui Li, Zhaoxiang Wang, Liemao Hu, Changjun Ke, Yijun Zheng, Wanli Zhao, Rongqing Tan

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引用次数: 0

摘要

在这项工作中，我们报告了一种基于二氧化碳气体双光子吸收的长波红外（LWIR）调制器。我们讨论了气体压力和激光功率对不同波长下调制的影响。在 9.36 μm 激光下，最大调制深度为 21.5%，上升时间（全时）小于 20 ns。气体调制器采用 2.75 μm 激光作为泵浦源，能够将泵浦光的脉冲特性转换为长波红外光的调制特性。它在长波红外激光器的快速光调制方面显示出巨大的应用潜力。

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Fast modulation of a long-wave infrared laser based on the two-photon absorption of CO2

In this work, we report a long-wave infrared (LWIR) modulator based on the two-photon absorption of CO2 gas. The effect of gas pressure and laser power on the modulation under different wavelengths is discussed. A maximum modulation depth of 21.5% with a rise time (full time) less than 20 ns for a 9.36 μm laser was achieved. The gaseous modulator, which adopts a 2.75 μm laser as the pumping source, is capable of converting the pulse characteristics of the pump light into the modulation of the long-wave infrared light. It demonstrates promising potential for applications in the rapid optical modulation of LWIR lasers.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.