Direct generation of 128-fs Gaussian pulses from a compensation-free fiber laser using dual mode-locking mechanisms |
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| Authors: | Junsong Peng Li Zhan Zhaochang Gu Kai Qian Shouyu Luo Qishun Shen |
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| Affiliation: | 1. College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, China;2. School of Science, Heilongjiang University of Science and Technology, Harbin 150022, China;3. School of Physics Science and Technology, Tiangong University, Tianjin 300387, China;1. College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China;2. State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China;3. State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China;4. i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China;1. Aston Institute of Photonic Technologies, Aston University, Birmingham, B4 7ET, UK;2. MIT Lincoln Laboratory, 244 Wood Street, Lexington, MA 02421, USA;3. Novosibirsk State University, Novosibirsk, 630090, Russia;4. Institute of Computational Technologies, SB Russian Academy of Science, Novosibirsk, 630090, Russia |
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| Abstract: | We have experimentally demonstrated the direct generation of 128-fs pulses in an all-anomalous-dispersion all-fiber mode-locked laser. The laser is free of dispersion compensation in the cavity based on standard single mode fiber (SMF). The time-bandwidth product is 0.536. The laser is achieved by using two mode-lockers, one is nonlinear polarization rotation (NPR), and the other is nonlinear amplifying loop mirror. The coexistence of dual mode-locking mechanisms can decrease the cavity length to 12-m, and also results in producing high-quality pulses with a Gaussian shape both on the pulse profile and spectrum, but without Kelly sidebands. |
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