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Proceedings Paper

Continuously bandwidth-tunable pulse generation from a SWNT mode-locked fiber laser
Author(s): Guoqing Hu; Huifeng Shi; Jie Yin; Yuwei Su; Tingting Zhang; Jingwen He; Zhihui Liu
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Paper Abstract

The continuously bandwidth-tunable pulse generation in the SWNT mode-locked fiber laser is achieved by only tuning the intracavity polarization state. By introducing the in-line polarizer with 2-meter-long polarization maintaining fiber pigtails in a typical ring fiber laser, a bandwidth-tunable SWNT mode-locked fiber laser is constructed. The mode locker is the single-wall carbon nanotube saturable absorber, which is fabricated by optical deposition in the ~0.27 w.t % ultrasonic carbon nanotube alcohol solution. By only tuning the intracavity polarization controllers, the spectral bandwidth is continuously tuned in the range of 0.94 to 3.04 nm. We attribute the upper limit of the spectral bandwidth to the limit of the free spectral range determined by Lyot filter, which consists of polarization controllers and in-linepolarizer in the cavity. These results provide a simple way to achieve bandwidth-tunable subpicosecond pulse, which should be attractive to the applications requiring ultrafast sources with tunable bandwidth or pulsewidth.

Paper Details

Date Published: 10 May 2019
PDF: 4 pages
Proc. SPIE 11068, Second Symposium on Novel Technology of X-Ray Imaging, 110680F (10 May 2019); doi: 10.1117/12.2523172
Show Author Affiliations
Guoqing Hu, Beijing Institute of Satellite Information Engineering (China)
Beihang Univ. (China)
Huifeng Shi, Beijing Institute of Satellite Information Engineering (China)
Jie Yin, Beijing Institute of Satellite Information Engineering (China)
Yuwei Su, Beijing Institute of Satellite Information Engineering (China)
Tingting Zhang, Beijing Institute of Satellite Information Engineering (China)
Jingwen He, Beijing Institute of Satellite Information Engineering (China)
Zhihui Liu, Beijing Institute of Satellite Information Engineering (China)


Published in SPIE Proceedings Vol. 11068:
Second Symposium on Novel Technology of X-Ray Imaging
Yangchao Tian; Tiqiao Xiao; Peng Liu, Editor(s)

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