2.8 μm all-fiber Q-switched and mode-locked lasers with black phosphorus
In past years, rare-earth-doped fluoride fiber lasers (FFLs) have developed rapidly in the mid-infrared (mid-IR) region. However, due to the lack of fiber optic devices and challenge of fluoride fiber splicing, most mid-IR FFLs have been demonstrated with free-space optic elements, limiting the advantages of all-fiber lasers for flexible delivery, stability, and compactness. Here, we report, to the best of our knowledge, the first pulsed all-fiber FFL in the mid-IR region. By taking advantage of the integration of black phosphorus flake, stable Q-switched and mode-locked pulses were obtained at 2.8 μm wavelength. We believe that this all-fiber design will promote the application of pulsed FFL in the mid-IR region.
基金项目：National Basic Research Program of China (2013CBA01505); National Natural Science Foundation of China (NSFC)10.13039/501100001809 (11721091, 61675130); National Postdoctoral Program for Innovative Talents (BX20170149); China Postdoctoral Science Foundation10.13039/501100002858 (2017M620150).
Guoqiang Xie：Key Laboratory for Laser Plasmas (Ministry of Education), Collaborative Innovation Center of IFSA (CICIFSA), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
Jingui Ma：Key Laboratory for Laser Plasmas (Ministry of Education), Collaborative Innovation Center of IFSA (CICIFSA), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
Peng Yuan：Key Laboratory for Laser Plasmas (Ministry of Education), Collaborative Innovation Center of IFSA (CICIFSA), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
Liejia Qian：Key Laboratory for Laser Plasmas (Ministry of Education), Collaborative Innovation Center of IFSA (CICIFSA), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
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Zhipeng Qin, Guoqiang Xie, Jingui Ma, Peng Yuan, and Liejia Qian, "2.8 μm all-fiber Q-switched and mode-locked lasers with black phosphorus," Photonics Research 6(11), 1074-1078 (2018)