Xu Dangpeng, Tian Xiaocheng, Zhou Dandan, Zong Zhaoyu, Fan Mengqiu, Zhang Rui, Zhu Na, Xie Lianghua, Li Hongxun, Wang Jianjun, Li Mingzhong, Zhang Xiaomin
Appl Opt. 2017 Apr 1;56(10):2661-2666. doi: 10.1364/AO.56.002661.
A fiber laser injection system used as a seeder for a high-power laser facility of inertial confinement fusion was designed to meet stringent requirements. Herein, we demonstrate the fiber laser injection system, whose output single-pulse energy reaches the millijoule class. With two-stage amplitude modulators, the system produces a pulse with a higher pulse shaping capability. In addition, amplifying the pulse with large-mode-area fiber and single polarization, large-mode-area photonic crystal fiber (PCF) ensures a good beam quality output. In this proof-of-principle experiment, the long-term stability of FM-to-AM modulation and pulse energy is demonstrated. The successful demonstration of this laser injection system holds great significance for future high-power laser drivers.
