Zheyuan Zhang, Xiangbao Bu, Daiki Okazaki, Wenqing Song, Ikki Morichika, Satoshi Ashihara. "Tunable mode-locked laser in the 2.0–2.6 μ m range with GHz-level spectral width and sub-nanosecond pulse duration." Applied Physics Letters (2025). https://doi.org/10.1063/5.0249138