期刊
LASER PHYSICS
卷 24, 期 8, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1054-660X/24/8/085109
关键词
mode-locked laser; fiber laser; few-layer graphene; soliton
资金
- National Natural Science Foundation of China [61205132]
- Research Fund for the Doctoral Program of Higher Education of China [20120071120023]
- Fundamental Research Funds for the Central University [GKH1232000/007, 20520133249, 20520131128]
- Funds for Shanghai ultra-precision optical manufacturing engineering technology research center Grant [11DZ2282200]
- Hong Kong Polytechnic University Research grant [G-YM19, 4-ZZE6, G-YK58]
A few-layer graphene saturable absorber-based multi-mode fiber is used in a long-cavity fiber laser for passive mode-locking pulse generation. The saturable absorber has a large light-graphene interaction area, which increases its tolerance to pulse energy and decreases its saturable absorption threshold. The long-cavity fiber laser proposed has a high slope efficiency of similar to 8.14%, and when the pumped power is increased to similar to 355 mW, the laser can still operate at passive mode-locking regime with a high output power of similar to 27.28 mW. The output pulses have the pulse energy of similar to 3.2 nJ, pulse width of similar to 883.9 fs, repetition rate of 8.5 MHz, and central wavelength of 1563.5 nm. Such a fiber laser has potential applications in optical communication, microsurgery and laser micromachining.
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