Generation of 100 nJ pulse, 1 W average power at from an intermode beating mode-locked all-fiber laser

Jiaji Zhang, Duanduan Wu, Ruwei Zhao, Rongping Wang, Shixun Dai
2019 High Power Laser Science and Engineering  
We report on the investigation of intermode beating mode-locked (IBML) pulse generation in a simple all-fiber Tm $^{3+}$ -doped double clad fiber laser (TDFL). This IBML TDFL is implemented by matching longitudinal-mode frequency between 793 nm laser and TDFL without extra mode locker. The central wavelength of ${\sim}1983~\text{nm}$ , the fundamental pulse frequency of ${\sim}9.6~\text{MHz}$ and the signal-to-noise ratio (SNR) of ${>}50~\text{dB}$ are achieved in this IBML TDFL. With laser
more » ... ty optimization, the IBML TDFL can finally generate an average output power of 1.03 W with corresponding pulse energy of ${\sim}107~\text{nJ}$ . These results can provide an easily accessible way to develop compact large-energy, high-power TDFLs.
doi:10.1017/hpl.2019.50 fatcat:n7dl4l6uzvglxkn3fr4wa3ac3a