Infrared and Laser Engineering, Vol. 49, Issue 12, 20201069 (2020)
LD-pumped high-repetition-rate all-solid-state femtosecond lasers (Invited)
Zheng Li1, Wang Huibo1,2, Tian Wenlong1, Zhang Dacheng1, Han Hainian2, Zhu Jiangfeng1, and Wei Zhiyi2
- 1School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China
- 2Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Compared with traditional ~100 MHz femtosecond lasers, the mode spacing is larger of GHz femtosecond lasers so that each comb can simply be resolved. Furthermore, the less dense of longitudinal modes results in higher average power. Therefore, it has more important application value in many research fields, such as comb-resolvabled spectroscopy, direct optical frequency comb spectroscopy, optical arbitrary waveform generation and astronomical spectrograph calibration. In this review, the generation schemes of GHz femtosecond pulses and the corresponding technical challenges of GHz-repetition-rate all-solid-state femtosecond lasers pumped by laser diode were introduced in detail firsly. Secondly, the international research progresses of all-solid-state GHz femtosecond lasers based on SESAM passively mode-locking and Kerr-lens mode-locking were summarized. Finally, the application value and research object of our group in all-solid-state GHz-repetition-rate femtosecond lasers were forcasted based on our preliminary research results.
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