Noise-like pulse generation from a thulium-doped fiber laser using nonlinear polarization rotation with different net anomalous dispersion

• DOI: 10.1364/prj.4.000318
• Publication Date: 2016-11-23T00:57:23Z
• Authors: Shuo Liu; Fengping Yan; Yang Li; Luna Zhang; Zhuoya Bai; Hong Zhou; Yafei Hou
• Keywords: Spectral width; Thulium; Mode-Locking

A mode-locked thulium-doped fiber laser (TDFL) based on nonlinear polarization rotation (NPR) with different net anomalous dispersion is demonstrated. When the cavity −1.425 ps2, noise-like (NL) pulse coherence spike width of 406 fs and energy 12.342 nJ generated at a center wavelength 2003.2 nm 3 dB spectral bandwidth 23.20 nm. In experimental period 400 min, variation, output power fluctuation, central shift are less than 0.06 nm, 0.04 dB, 0.4 nm, respectively, indicating that NPR-based TDFL operating in NL regime holds good long-term stability.