1.2 kW all-fiber narrow-linewidth picosecond MOPA system

Jiexi Zuo; Haijuan Yu; Shuzhen Zou; Zhiyong Dong; Chaojian He; Shuang Xu; Chaoyu Ning; Xuechun Chen; Xinyao Li; Xuechun Lin

doi:10.1017/hpl.2023.26

High Power Laser Science and Engineering (Jan 2023)

1.2 kW all-fiber narrow-linewidth picosecond MOPA system

Jiexi Zuo,
Haijuan Yu,
Shuzhen Zou,
Zhiyong Dong,
Chaojian He,
Shuang Xu,
Chaoyu Ning,
Xuechun Chen,
Xinyao Li,
Xuechun Lin

Affiliations

Jiexi Zuo: ORCiD; Laboratory of All-Solid-State Light Sources, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, China Beijing Engineering Technology Research Center of All-Solid-State Lasers Advanced Manufacturing, Beijing, China
Haijuan Yu: Laboratory of All-Solid-State Light Sources, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, China Beijing Engineering Technology Research Center of All-Solid-State Lasers Advanced Manufacturing, Beijing, China
Shuzhen Zou: Laboratory of All-Solid-State Light Sources, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China Beijing Engineering Technology Research Center of All-Solid-State Lasers Advanced Manufacturing, Beijing, China
Zhiyong Dong: Laboratory of All-Solid-State Light Sources, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China Beijing Engineering Technology Research Center of All-Solid-State Lasers Advanced Manufacturing, Beijing, China
Chaojian He: Laboratory of All-Solid-State Light Sources, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China Beijing Engineering Technology Research Center of All-Solid-State Lasers Advanced Manufacturing, Beijing, China
Shuang Xu: ORCiD; Laboratory of All-Solid-State Light Sources, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, China Beijing Engineering Technology Research Center of All-Solid-State Lasers Advanced Manufacturing, Beijing, China
Chaoyu Ning: Laboratory of All-Solid-State Light Sources, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, China Beijing Engineering Technology Research Center of All-Solid-State Lasers Advanced Manufacturing, Beijing, China
Xuechun Chen: ORCiD; Laboratory of All-Solid-State Light Sources, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, China Beijing Engineering Technology Research Center of All-Solid-State Lasers Advanced Manufacturing, Beijing, China
Xinyao Li: ORCiD; Laboratory of All-Solid-State Light Sources, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, China Beijing Engineering Technology Research Center of All-Solid-State Lasers Advanced Manufacturing, Beijing, China
Xuechun Lin: Laboratory of All-Solid-State Light Sources, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, China Beijing Engineering Technology Research Center of All-Solid-State Lasers Advanced Manufacturing, Beijing, China

DOI: https://doi.org/10.1017/hpl.2023.26
Journal volume & issue: Vol. 11

Abstract

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Achieving an all-fiber ultra-fast system with above kW average power and mJ pulse energy is extremely challenging. This paper demonstrated a picosecond monolithic master oscillator power amplifier system at a 25 MHz repetition frequency with an average power of approximately 1.2 kW, a pulse energy of approximately 48 μJ and a peak power of approximately 0.45 MW. The nonlinear effects were suppressed by adopting a dispersion stretched seed pulse (with a narrow linewidth of 0.052 nm) and a multi-mode master amplifier with an extra-large mode area; then an ultimate narrow bandwidth of 1.32 nm and a moderately broadened pulse of approximately 107 ps were achieved. Meanwhile, the great spatio-temporal stability was verified experimentally, and no sign of transverse mode instability appeared even at the maximum output power. The system has shown great power and energy capability with a sacrificed beam propagation product of 5.28 mm $\cdot$ mrad. In addition, further scaling of the peak power and pulse energy can be achieved by employing a lower repetition and a conventional compressor.

Published in High Power Laser Science and Engineering

ISSN: 2095-4719 (Print); 2052-3289 (Online)
Publisher: Cambridge University Press
Country of publisher: United Kingdom
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics
Website: https://www.cambridge.org/core/journals/high-power-laser-science-and-engineering

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