Paper
12 March 2020 NOLM-based mode-locked Yb-doped fiber laser with wide-spectrum
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Abstract
In this paper, a mode-locked Ytterbium-doped fiber laser based on nonlinear optical loop mirror (NOLM) is proposed. The laser generates a wide-spectrum dissipative soliton resonance mode-locked pulse with strong stimulated Raman scattering. The fiber laser is pumped forward, and the fiber ring cavity contains double-cladding Yb-doped fiber, output coupler, polarization controller, polarization independent isolator and other elements. NOLM is connected with the ring cavity by through a 3dB beam splitter and 25m single-mode fiber. The total length of the eight-shape cavity laser is about 60meters. By adjusting the intra-cavity polarization controller, a stable dissipative soliton resonance mode-locked spike pulse can be achieved. The repetition frequency of the pulse train is 3.44MHz, which is consistent with the cavity length. The 3dB bandwidth of the spectrum reaches 70.6nm, and the 10dB bandwidth is close to 147.11nm. In this experiment, dissipative soliton resonance mode-locked pulses with wide spectrum and high pulse energy are realized by a traditional mode-locking method, which has wide application in many fields such as laser spectral detection and terahertz wave generation.
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Tianqi Zhang, Yuzhai Pan, Lixin Yang, Zhaoshuo Tian, Wenjun Liu, Jieguang Miao, and Quanli Dong "NOLM-based mode-locked Yb-doped fiber laser with wide-spectrum", Proc. SPIE 11437, 2019 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications, 1143706 (12 March 2020); https://doi.org/10.1117/12.2542238
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KEYWORDS
Mode locking

Fiber lasers

Polarization

Solitons

Raman spectroscopy

Ions

Mirrors

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