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A fiber‐based approach that generates mid‐infrared femtosecond pulses in the 3–4 m spectral region with microjoule‐level single pulse energy is demonstrated. This is realized in a piece of gas‐filled antiresonant hollow‐core fiber that is pumped by a two‐micron light source. A rapid variation of the dispersion near a structural resonance of the fiber creates a phase‐matching point in mid‐infrared,...
Mid‐Infrared Femtosecond Pulse Generation in Hollow‐Core Fibers
In article number 2200882, Ang Deng, Wonkeun Chang, and colleagues present a novel approach to generate high‐energy femtosecond pulses in mid‐infrared from a gas‐filled hollow‐core fiber. The efficient conversion of near‐infrared pump to mid‐infrared is facilitated by engineering the cross‐sectional geometry of cladding elements in the...
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