10 W-Level High-Efficiency Continuous-Wave and Gain-Switched All-Fiber Laser at 1.7 μm

IF 2.2 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Journal of Quantum Electronics Pub Date : 2025-04-15 DOI:10.1109/JQE.2025.3560527

Jue Su;Tingting Chen;Junjie Ma;Jingbin Lan;Xin Zhou;Lu Huang;Hongzhen Dai;Zhengqian Luo

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引用次数: 0

Abstract

We report

$1.7~\boldsymbol {\mu }$

m high-efficiency, high-power continuous-wave (CW) and gain-switched thulium-doped all-fiber lasers with master oscillator power amplifier (MOPA) configuration. The

$1.7~\boldsymbol {\mu }$

m seed source comprises a homemade 1566 nm fiber laser as pump source, a femtosecond direct-written fiber Bragg grating pair, and a low-dopant Tm3+ gain fiber. By changing the operating mode (CW/pulsed) of the 1566 nm pump source, CW/gain-switched output of the

$1.7~\boldsymbol {\mu }$

m seed source can be achieved, respectively. The CW MOPA achieves a maximum output power of 10 W with a slope efficiency of 68%, representing the highest power level from a

$1.7~\boldsymbol {\mu }$

m Tm-doped CW laser in all-fiber format. Moreover, the amplified average output power of the demonstrated gain-switched operation is 2.28 W with the amplification slope efficiency, pulse energy, and peak power of 76.8%,

$152~\boldsymbol {\mu }$

J, and 2.054 kW, respectively. This is, to the best of our knowledge, the highest single pulse energy and amplification efficiency of a Tm-doped gain-switched all-fiber laser. This work provides a new path to achieve high power and large energy of

$1.7~\boldsymbol {\mu }$

m all-fiber laser for applications in bio-imaging and long-distance sensing technology.

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10w级1.7 μm高效连续波增益开关全光纤激光器

我们报道了一种具有主振荡器功率放大器（MOPA）结构的高效率、高功率连续波（CW）和增益开关掺铥全光纤激光器，其总功率为1.7~\boldsymbol {\mu}$ m。$1.7~\boldsymbol {\mu}$ m的种子源由自制的1566 nm光纤激光器作为泵浦源、飞秒直写光纤布拉格光栅对和低掺杂Tm3+增益光纤组成。通过改变1566 nm泵浦源的工作模式（连续波/脉冲），可以分别实现$1.7~\boldsymbol {\mu}$ m种子源的连续波/增益切换输出。连续波MOPA的最大输出功率为10 W，斜率效率为68%，代表了1.7~\boldsymbol {\mu}$ m全光纤掺tm连续波激光器的最高功率水平。此外，所演示的增益开关操作的放大平均输出功率为2.28 W，放大斜率效率为76.8%，脉冲能量为152~\boldsymbol {\mu}$ J，峰值功率为2.054 kW。据我们所知，这是掺铥增益开关全光纤激光器的最高单脉冲能量和放大效率。本工作为实现高功率、大能量$1.7~\boldsymbol {\mu}$ m的全光纤激光器在生物成像和远距离传感技术中的应用提供了一条新途径。

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来源期刊

IEEE Journal of Quantum Electronics 工程技术-工程：电子与电气

CiteScore

4.70

自引率

4.00%

发文量

审稿时长

3.0 months

期刊介绍： The IEEE Journal of Quantum Electronics is dedicated to the publication of manuscripts reporting novel experimental or theoretical results in the broad field of the science and technology of quantum electronics. The Journal comprises original contributions, both regular papers and letters, describing significant advances in the understanding of quantum electronics phenomena or the demonstration of new devices, systems, or applications. Manuscripts reporting new developments in systems and applications must emphasize quantum electronics principles or devices. The scope of JQE encompasses the generation, propagation, detection, and application of coherent electromagnetic radiation having wavelengths below one millimeter (i.e., in the submillimeter, infrared, visible, ultraviolet, etc., regions). Whether the focus of a manuscript is a quantum-electronic device or phenomenon, the critical factor in the editorial review of a manuscript is the potential impact of the results presented on continuing research in the field or on advancing the technological base of quantum electronics.