Digital-wavelength ytterbium fiber laser mode-locked with MoS2

作者：Wang, Shiwei; Zhou, Yan; Wang, Yao; Yan, Shuo; Li, Yue; Zheng, Wanguo^*; Deng, Ying; Zhu, Qihua; Xu, Jianqiu; Tang, Yulong^*

来源：Laser Physics Letters, 2016, 13(5): 055102.

DOI：10.1088/1612-2011/13/5/055102

• mode-locked fiber lasers
• MoS2
• saturable absorber
• digital-wavelength

In this letter, we report a digital-wavelength ytterbium-doped fiber laser passively mode-locked with layered molybdenum disulfide (MoS2). The MoS2 based saturable absorber (SA) is made by solution coating the MoS2 solution on a gold mirror, showing modulation depth and saturation intensity of 11.4% and 1.37 MW cm(-2), respectively. The output pulse has duration of similar to 300 ps, 3 dB spectral width of similar to 0.5 nm and maximum output power of 2.6 mW. The mode-locked fundamental frequency is 2.67 MHz with a similar to 36 dB signal-to-noise ratio. Through tuning the polarization controller (PC) and squeezing/stretching the single mode fiber in the ring cavity, four-bit digital wavelength emission is achieved. It is proposed that the digital-wavelength tuning feature of fiber lasers can be employed in coding and signal processing.

• 出版日期2016-5
• 单位中国工程物理研究院激光聚变研究中心; 上海交通大学; 中国工程物理研究院