NOLM-based Mode-locked Yb-doped Fiber Laser with Wide-spectrum

• 作者: Jieguang Miao Lixin Yang Quanli Dong Tianqi Zhang Wenjun Liu Yuzhai Pan Zhaoshuo Tian
• 来源期刊: 电子研究与应用
• 学科: 工学
• 关键词: MODE-LOCKED fiber LASER WIDE SPECTRUM DISSIPATIVE soliton Stimulated Raman scattering
• 年，卷（期）: 2019,（4）
• 页码范围: 15-19
• 页数: 5页
• 分类号: TN2

摘要

In this paper,a mode-locked Ytterbiumdoped fiber laser based on nonlinear optical loop mirror(NOLM)is proposed.The laser generates a wide-spectrum dissipative soliton resonance modelocked 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 modelocking method,which has wide application in many fields such as laser spectral detection and terahertz wave generation.