Journal
OPTICS EXPRESS
Volume 22, Issue 7, Pages 7875-7882Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.22.007875
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Funding
- National Nature Science Foundation of China [61377042, 61107037]
- European Commission's Marie Curie International Incoming Fellowship [911333]
- Key Laboratory of Science and Technology on High Energy Laser, CAEP [2013005580]
- Science and Technology Innovation Team of Sichuan Province [2011JTD0001]
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A self-starting all-fiber passively mode-locked Tm3+-doped fiber laser based on nonlinear loop mirror (NOLM) is demonstrated. Stable soliton pulses centered at 2017.33 nm with 1.56 nm FWHM were produced at a repetition rate of 1.514 MHz with pulse duration of 2.8 ps and pulse energy of 83.8 pJ. As increased pump power, the oscillator can also operate at noise-like (NL) regime. Stable NL pulses with coherence spike width of 341 fs and pulse energy of up to 249.32 nJ was achieved at a center wavelength of 2017.24 nm with 21.33 nm FWHM. To the best of our knowledge, this is the first 2 mu m region NOLM-based mode-locked fiber laser operating at two regimes with the highest single pulse energy for NL pulses. (C) 2014 Optical Society of America
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