All-Fiber Bidirectional Mode-Locked Ultrafast Fiber Laser at 2 <italic>μ</italic>m
In this paper, we demonstrated an all-fiber bidirectional ultrafast thulium-doped fiber laser at 2 μm with a single-wall carbon nanotube presented as saturable absorber. We successfully obtained bidirectional mode-locking operations with pulse repetition frequency adjustable from 35 to 12...
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| Format: | Article |
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IEEE
2019-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8930013/ |
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| author | Yiming Li Ke Yin Xin Zhang Xin Zheng Xiangai Cheng Tian Jiang |
| author_facet | Yiming Li Ke Yin Xin Zhang Xin Zheng Xiangai Cheng Tian Jiang |
| author_sort | Yiming Li |
| collection | DOAJ |
| description | In this paper, we demonstrated an all-fiber bidirectional ultrafast thulium-doped fiber laser at 2 μm with a single-wall carbon nanotube presented as saturable absorber. We successfully obtained bidirectional mode-locking operations with pulse repetition frequency adjustable from 35 to 122 MHz by shortening the cavity length. Meanwhile, with the reduction of the intracavity dispersion, the number of Kelly sidebands was significantly decreased and the output energy was more concentrated on the soliton pulse. Besides, by manipulating the pump power and polarization controller, the two results of bidirectional mode-locked pulses with the same repetition frequency and differential repetition frequency were observed. We found that the repetition rate difference between the clockwise and counterclockwise pulse trains was adjustable by changing the pump power or controlling the intracavity polarization. When the pulse repetition frequency was 35 MHz and 122 MHz, the adjustment range of repetition rate difference was 764–922 Hz and 540–2000 Hz, respectively. It is believed that this novel laser source can support free-running dual optical comb spectroscopy to detect important air gases like H<sub>2</sub>O or CO<sub>2</sub> in the future. |
| format | Article |
| id | doaj-art-d96dacfc28d64f5bafff5f470bb6d353 |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-d96dacfc28d64f5bafff5f470bb6d3532025-08-20T03:32:54ZengIEEEIEEE Photonics Journal1943-06552019-01-011161810.1109/JPHOT.2019.29571678930013All-Fiber Bidirectional Mode-Locked Ultrafast Fiber Laser at 2 <italic>μ</italic>mYiming Li0https://orcid.org/0000-0003-4744-9131Ke Yin1https://orcid.org/0000-0003-0560-3727Xin Zhang2https://orcid.org/0000-0002-7748-7668Xin Zheng3Xiangai Cheng4Tian Jiang5https://orcid.org/0000-0003-3343-5548College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, ChinaNational Innovation Institute of Defense Technology, Academy of Military Sciences PLA China, Beijing, ChinaCollege of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, ChinaNational Innovation Institute of Defense Technology, Academy of Military Sciences PLA China, Beijing, ChinaCollege of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, ChinaCollege of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, ChinaIn this paper, we demonstrated an all-fiber bidirectional ultrafast thulium-doped fiber laser at 2 μm with a single-wall carbon nanotube presented as saturable absorber. We successfully obtained bidirectional mode-locking operations with pulse repetition frequency adjustable from 35 to 122 MHz by shortening the cavity length. Meanwhile, with the reduction of the intracavity dispersion, the number of Kelly sidebands was significantly decreased and the output energy was more concentrated on the soliton pulse. Besides, by manipulating the pump power and polarization controller, the two results of bidirectional mode-locked pulses with the same repetition frequency and differential repetition frequency were observed. We found that the repetition rate difference between the clockwise and counterclockwise pulse trains was adjustable by changing the pump power or controlling the intracavity polarization. When the pulse repetition frequency was 35 MHz and 122 MHz, the adjustment range of repetition rate difference was 764–922 Hz and 540–2000 Hz, respectively. It is believed that this novel laser source can support free-running dual optical comb spectroscopy to detect important air gases like H<sub>2</sub>O or CO<sub>2</sub> in the future.https://ieeexplore.ieee.org/document/8930013/Ultrafast lasersfiber optics and oscillatorsthulium-doped fiberinfrared and far-infrared lasers. |
| spellingShingle | Yiming Li Ke Yin Xin Zhang Xin Zheng Xiangai Cheng Tian Jiang All-Fiber Bidirectional Mode-Locked Ultrafast Fiber Laser at 2 <italic>μ</italic>m IEEE Photonics Journal Ultrafast lasers fiber optics and oscillators thulium-doped fiber infrared and far-infrared lasers. |
| title | All-Fiber Bidirectional Mode-Locked Ultrafast Fiber Laser at 2 <italic>μ</italic>m |
| title_full | All-Fiber Bidirectional Mode-Locked Ultrafast Fiber Laser at 2 <italic>μ</italic>m |
| title_fullStr | All-Fiber Bidirectional Mode-Locked Ultrafast Fiber Laser at 2 <italic>μ</italic>m |
| title_full_unstemmed | All-Fiber Bidirectional Mode-Locked Ultrafast Fiber Laser at 2 <italic>μ</italic>m |
| title_short | All-Fiber Bidirectional Mode-Locked Ultrafast Fiber Laser at 2 <italic>μ</italic>m |
| title_sort | all fiber bidirectional mode locked ultrafast fiber laser at 2 x00a0 italic x03bc italic m |
| topic | Ultrafast lasers fiber optics and oscillators thulium-doped fiber infrared and far-infrared lasers. |
| url | https://ieeexplore.ieee.org/document/8930013/ |
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