期刊
JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 36, 期 13, 页码 2694-2701出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2017.2781702
关键词
Fiber lasers; nanomaterials; passive Q-switching; saturable absorber; visible laser
资金
- National Natural Science Foundation of China [11674269, 61275050]
- Science Funds for Distinguished Young Scientists of Fujian Province [2017J06016]
- Shenzhen Science and Technology Projects [JCYJ20160414160109018]
We report bidirectional red-light passively Q-switched all-fiber lasers based on a ring-cavity configuration using single-wall carbon nanotubes (SWNTs) as saturable absorber (SA). By manipulating the cavity design and intra-cavity polarization state, two sets of output pulses with different features could be achieved from the clockwise (C.W.) and counterclockwise (C.C.W.) directions, respectively. In the C.W. direction, the lasers generate the wavelength of 635.4 nm, the pulse trains with minimum pulse duration of 1.35 mu s (1.51 mu s) and the repetition rate ranging from 65.2 to 143 kHz (67.8 to 96.5 kHz). In the C.C.W. direction, the lasers, also emitting at 635.4 nm, deliver the pulse trains with minimum pulse duration of 0.81 mu s (3.59 mu s), as well as the repetition rate range of 57.5-98.2 kHz (37.2-58.9 kHz). This is, to the best of our knowledge, the first demonstration of bidirectional red-light passively Q-switched all-fiber ring lasers based on SWNT-SA.
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