Collection Of theses on high power laser and plasma physics, 2016, 14 (1): 052701, Published Online: May. 27, 2017  

High-energy square pulses and burst-mode pulses in an all-normal dispersion double-clad mode-locked fiber laser

Author Affiliations
1 National Laboratory on High Power Lasers and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai 201800, China
2 University of the Chinese Academy of Sciences, Beijing 100049, China
Abstract
A double-clad Yb-doped mode-locked fiber laser that can operate in burst-mode and square-pulse states is experimentally investigated. In the burst-mode state, a burst train with 55 pulses of 500 ps duration is obtained. In the square-pulse state, which is similar to noiselike pulses, the maximum pulse energy is 820 nJ and the duration can be tuned from 15.8 to 546 ns. The square pulses have a narrow and multipeak spectrum, which is quite different from that of normal noiselike pulses. The fiber laser promises an alternative formation mechanism for burst-mode and square-pulse mode-locked fiber lasers.

Zhi Qiao, Xiaochao Wang, Chao Wang, Yuanyuan Jing, Wei Fan, Zunqi Lin. High-energy square pulses and burst-mode pulses in an all-normal dispersion double-clad mode-locked fiber laser[J]. Collection Of theses on high power laser and plasma physics, 2016, 14(1): 052701.

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