Journal
CHINESE OPTICS LETTERS
Volume 18, Issue 3, Pages -Publisher
OSA-OPTICAL SOC
DOI: 10.3788/COL202018.031402
Keywords
generation; mode-locked pulses; Er:ZBLAN fiber
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Funding
- National Natural Science Foundation of China [61675130, 91850203, 11721091]
- National Postdoctoral Program for Innovative Talents [BX20170149]
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We demonstrated a femtosecond mode-locked Er:ZrF4-BaF2-LaF3-AlF3-NaF (Er:ZBLAN) fiber laser at 2.8 mu m based on the nonlinear polarization rotation technique. The laser generated an average output power of 317mW with a repetition rate of 107 MHz and pulse duration as short as 131 fs. To the best of our knowledge, this is the shortest pulse generated directly from a mid-infrared mode-locked Er:ZBLAN fiber laser to date. Numerical simulation and experimental results confirm that reducing the gain fiber length is an effective way to shorten the mode-locked pulse duration in the Er:ZBLAN fiber laser. The work takes an important step towards sub-100-fs mid-infrared pulse generation from mode-locked Er:ZBLAN fiber lasers.
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