d down to 587 fs through a pair of transmission gratings. We believe that Рthe narrower pulses could be achieved by switching to fiber Bragg gratings to precisely adjustment the dispersion Рbetween the stretchers and compressors. The robust, broadband, and watt-level 1550 nm fiber laser source can Рbe used for nonlinear frequency conversion, solar cell micromachining and ophthalmology due to its compact Рsize. РKeywords: Chirped-pulse amplification；Self-similar amplification; Broad spectrum; Erbium-doped fiber; РErbium-ytterbium co-doped fiber РOCIS Codes: 140.3500; 140.3510; 140.4050; 140.4480 РFoundation item: The Natural Science Foundation of Zhejiang Province under Grant (No.LGG20F050002), Open РProject Program of Wuhan National Laboratory for Optoelectronics (No.2020WNLOKF008)
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