Mesoporous carbon nanospheres deposited onto D-shaped fibers for femtosecond pulse generation
Year: 2019
Type: article
Abstract: We demonstrate nonlinear optical modulation by combining mesoporous carbon nanospheres (MCNs) and D-shaped fibers (DFs). The MCNs are prepared by the silica-assisted strategy and the DFs are fabricated through a precision wheel polishing method. When the MCNs are deposited onto the DF as the saturable absorbers (SAs), the SAs possess broadband linear absorption and nonlinear saturable absorption properties. As the DF-MCNs SA is integrated into the laser cavities, ultrafast lasers at 1.56 and 2 μm were realized with minimal pulse duration down to a few hundreds of femtoseconds. Compared with the film and microfiber-based MCNs-SAs, the DF-MCNs SAs exhibit greater robustness and stronger evanescent field, and are more effective at generating femtosecond pulses. Our results verify that DF-MCNs as a kind of cost-effective and easily-prepared SA would be of great importance for stable and high-power femtosecond fiber lasers.
Source: RSC Advances
DOI: 10.1039/c9ra01082c
Authors: Fang Wang, Hua Zhou, Nan Li, Jiaxing Liu, Daguang Li, Zhe Kang, Zhixu Jia, Zhen-an Qiao, Weiping Qin, Guanshi Qin
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,042
Funders: National Natural Science Foundation of China, Ministry of Education of the People's Republic of China, People's Government of Jilin Province, Tsinghua National Laboratory for Information Science and Technology, Youth Innovation Promotion Association of the Chinese Academy of Sciences, State Key Laboratory of Laser Interaction with Matter, State Key Laboratory on Integrated Optoelectronics, Youth Innovation Promotion Association
OpenAlex ID: W2939731036