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We experimentally demonstrate for the first time, the efficient input-dependent dual-range frequency shifts of 279.73 GHz and 3.63 THz in a mode-locked fiber laser with an intracavity epsilon-near-zero element. Real-time observation reveals that the presented frequency shifts are non-adiabatic processes, unlike the reported extracavity settings.
Tobias Kippenberg, Nikolai Kuznetsov, Alisa Davydova, Andrey Gelash
Yves Bellouard, Pieter Vlugter
Tobias Kippenberg, Wenle Weng, Jijun He, Anat Siddharth, Miles Henry Anderson