Zhang Qian, Jin Xinxin, Hu Guohua, Zhang Meng, Zheng Zheng, Hasan Tawfique
Opt Express. 2020 Nov 9;28(23):34104-34110. doi: 10.1364/OE.403530.
We demonstrate an all-fiber, thulium-doped, mode-locked laser using a black phosphorus (BP) saturable absorber (SA). The BP-SA, exhibiting strong nonlinear response, is fabricated by inkjet printing. The oscillator generates self-starting 139 fs dispersion-managed soliton pulses centered at 1859nm with 55.6 nm spectral bandwidth. This is the shortest pulse duration and widest spectral bandwidth achieved directly from an all-fiber thulium-doped fiber laser mode-locked with a nanomaterial saturable absorber to date. Our findings demonstrate the applicability of BP for femtosecond pulse generation at 2 µm spectral region.
我们展示了一种使用黑磷（BP）可饱和吸收体（SA）的全光纤掺铥锁模激光器。具有强非线性响应的BP-SA通过喷墨打印制成。该振荡器产生中心波长为1859nm、脉宽为139 fs的自启动色散管理孤子脉冲，光谱带宽为55.6 nm。这是迄今为止直接由全光纤掺铥光纤激光器通过纳米材料可饱和吸收体锁模获得的最短脉冲持续时间和最宽光谱带宽。我们的研究结果证明了BP在2 µm光谱区域产生飞秒脉冲方面的适用性。
