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Advances and challenges of ultrafast fiber lasers in 2–4 µm mid‐infrared spectral regions

Zhang, Yani, Wu, Kexin, Guang, Zhe, Guo, Bo, Qiao, Dun, Wei, Zhiyi, Yang, Hongyan, Wang, Qiuyang, Li, Kang, Copner, Nigel and Li, Xiaohui 2024. Advances and challenges of ultrafast fiber lasers in 2–4 µm mid‐infrared spectral regions. Laser and Photonics Reviews 18 (3) , 2300786. 10.1002/lpor.202300786

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Abstract

AbstractMid‐infrared (mid‐IR) ultrafast lasers are widely employed in biomedicine, molecular spectroscopy, material processing, and nonlinear optics. With the improvement of fiber gain media and other fiber optical elements, low‐cost, compact, and high‐efficiency fiber lasers open up new opportunities for 2–4 µm pulse generations, which calls for a comprehensive review of their mode‐locking mechanisms, gain media, and fiber laser system performance. This paper, beginning with an overview of pulse‐generation technologies, reviews recent progress on 2–4 µm mid‐IR ultrafast fiber lasers, including Tm3+‐, Ho3+‐doped, Tm3+/Ho3+codoped silicate fiber 2 µm lasers, and Er3+‐, Dy3+‐doped, and Ho3+/Pr3+codoped ZBLAN fiber 2.5–4 µm lasers. Among them, the status of 2–4 µm ultrafast fiber lasers based on 2D material passive mode‐locking is emphatically discussed. Meanwhile, the novel advances on mode‐locking and gain fibers of mid‐IR ultrafast fiber lasers are explored. Furthermore, current and prospective applications of such laser systems are also introduced in detail. This review finally summarizes challenges associated with future development of mid‐IR ultrafast fiber lasers, which provides an outlook on how to achieve more desirable laser performance (e.g., higher average power, higher pulse energy, and longer emission wavelength) that can lead to more practical uses of such lasers.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Additional Information: License information from Publisher: LICENSE 1: URL: http://onlinelibrary.wiley.com/termsAndConditions#vor, Start Date: 2023-11-27
Publisher: Wiley-VCH Verlag
ISSN: 1863-8880
Last Modified: 04 Dec 2024 12:30
URI: https://orca.cardiff.ac.uk/id/eprint/173887

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