Abstract
We report, for the first time to our knowledge, on a single-mode millijoule-level 100-nanosecond Er-doped fiber laser operating near 1550 nm. The system features a newly developed 35-μm-core Yb-free double-clad Er-doped fiber based on glass matrix and produces pulses with energy as high as 1 mJ at repetition rates of 1–10 kHz.
© 2015 Optical Society of America
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