High-power, Joule-class, temporally shaped multi-pass ring laser amplifier with two Nd:glass laser heads. (7th February 2019)

• Record Type: Journal Article
• Authors: Guo, Jiangtao; Wang, Jiangfeng; Wei, Hui; Huang, Wenfa; Huang, Tingrui; Xia, Gang; Fan, Wei; Lin, Zunqi
• Is Part Of: High power laser science and engineering. Volume 7(2019)
• Publication Date: 2019-02-07
• Subjects: depolarization compensation, -- laser amplifier, -- neodymium laser, -- ring laser; High power lasers -- Periodicals; 621.366
• DOI: 10.1017/hpl.2018.68
• Languages: English
• ISSNs: 2095-4719

Abstract

Abstract : A high-power, Joule-class, nanosecond temporally shaped multi-pass ring laser amplifier system with two neodymium-doped phosphate glass (Nd:glass) laser heads is demonstrated. The laser amplifier system consists of three parts: an all-fiber structure seeder, a diode-pumped Nd:glass regenerative amplifier and a multi-pass ring amplifier, where the thermally induced depolarization of two laser heads is studied experimentally and theoretically. Following the injection of a square pulse with the pulse energy of 0.9 mJ and pulse width of 6 ns, a 0.969-J high-energy laser pulse at 1 Hz was generated, which had the ability to change the waveform arbitrarily, based on the all-fiber structure front end. The experimental results show that the proposed laser system is promising to be adopted in the preamplifier of high-power laser facilities.