Chinese Optics Letters, 2018, 16 (8): 081402, Published Online: Aug. 2, 2018
Er-doped all-fiber laser mode-locked by graphitic carbon nitride nanosheets Download: 784次
Abstract
Few-layer graphitic carbon nitride (g-C3N4) nanosheets were fabricated and utilized as a saturable absorber for mode-locking in an Er-doped fiber laser with net normal dispersion. The g-C3N4/polyvinyl alcohol (PVA) hybrid-film-based saturable absorber has a modulation depth of 4.01% and a saturation intensity of 7.5 MW/cm2. By integrating g-C3N4-PVA mode-locker into the laser cavity, a mode-locked operation could be obtained. The achieved mode-locking pulse centered at 1530.3 nm has a pulse width of 530 ps. Its repetition rate is 40.8 MHz, and the corresponding signal-to-noise ratio is about 55 dB.
Zikai Dong, Runqin Xu, Wenhai Zhang, Heyang Guoyu, Lingling Hua, Jinrong Tian, Yanrong Song. Er-doped all-fiber laser mode-locked by graphitic carbon nitride nanosheets[J]. Chinese Optics Letters, 2018, 16(8): 081402.