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Mid‐Infrared Ultrafast Fiber Lasers
In article number 2300786, Yani Zhang, Bo Guo, Zhiyi Wei, and co‐workers present a review of recent advancements, applications, and future challenges of 2–4 µm mid‐infrared ultrafast fiber lasers. Laser pulse generation technologies, including active and passive mode‐locking, represented by low‐dimensional nanomaterial real saturable absorbers and nonlinear optically...
Mid‐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...