Abstract
A hybrid mode-locked thulium-doped fiber laser incorporating a nonlinear optical loop mirror and a nonlinear polarization rotation effect is proposed in the 2 μm band for the first time. By adjusting two polarization controllers, a stable single-polarization noise-like (SPNL) pulse operation is obtained. The SPNL pulse could work steadily for at least 400 min. At a launched pump power of 3.52 W, the hybrid mode-locked SPNL pulse centers at 2007 nm with an optical full width at half maximum of 20 nm, a polarization extinction ratio of 26.3 dB, a coherence spike width of 258 fs and a pulse energy of 42.11 nJ, respectively.
Original language | English |
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Article number | 045505 |
Journal | Journal of Optics (United Kingdom) |
Volume | 19 |
Issue number | 4 |
DOIs | |
Publication status | Published - Apr 2017 |
Externally published | Yes |
Keywords
- fiber nonlinear optics
- infrared lasers
- mode-locked lasers
- ultrafast lasers
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics