Photonics Research, 2018, 6 (11): 11001074, Published Online: Nov. 11, 2018
2.8 μm all-fiber Q -switched and mode-locked lasers with black phosphorus
Abstract
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.
Zhipeng Qin, Guoqiang Xie, Jingui Ma, Peng Yuan, Liejia Qian. 2.8 μm all-fiber