Mid-infrared all-solid anti-resonant chalcogenide fiber with large mode area and coupling tolerance

Large-mode-area anti-resonant fibers (LMA ARF) with high beam quality have the potential to revolutionize mid-infrared high-power laser delivery by mitigating mode instabilities and nonlinear degradation. However, their tens-of-microns mode field diameters and small numerical aperture significantly...

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Bibliographic Details
Published in:Applied physics letters 2024-09, Vol.125 (10)
Main Authors: Jiao, Kai, Wang, Xian-ge, Liang, Xiaolin, Wang, Yuze, Bai, Shengchuang, Zhang, Peiqing, Dai, Shixun, Nie, Qiuhua, Shen, Xiang, Wang, Xunsi, Zhao, Zheming, Wang, Rongping
Format: Article
Language:English
Subjects:
Coupling
High power lasers
Infrared lasers
Microlenses
Numerical aperture
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Summary:Large-mode-area anti-resonant fibers (LMA ARF) with high beam quality have the potential to revolutionize mid-infrared high-power laser delivery by mitigating mode instabilities and nonlinear degradation. However, their tens-of-microns mode field diameters and small numerical aperture significantly increase the mode field mismatch and coupling complexity, respectively. In this work, an LMA all-solid anti-resonant fiber-microlens with a robust operation of high beam quality in the mid-infrared region was designed and prepared. It can significantly stabilize the efficiencies of coupling and transmission at a large radial offset. Consequently, this AS-ARF demonstrates substantial potential for advancing mid-infrared laser power delivery via fiber, ensuring exceptional beam quality throughout the process.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0221373