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Proceedings Paper

2kW, 22GHz narrow linewidth polarization maintaining fiber amplifier with near-diffraction-limited beam quality
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Paper Abstract

In this paper, based on a linear polarized, white noise signal (WNS) phase modulated all fiber amplifier, the self-pulsing characteristics of polarization maintaining (PM) amplifier at the different phase modulation parameters with the same linewidth are analyzed experimentally. It is demonstrated that the self-pulsing threshold is closely related to the details of the modulation spectrum affected by the frequency and the signal power of the WNS, and it is near impossible to calculate by the linewidth. Besides, by suppressing the self-pulsing effect, we obtain an output of 2009 W with a linewidth of 22 GHz. The polarization extinction ratio (PER) is larger than 15 dB, and the M2 is lower than 1.2.

Paper Details

Date Published: 19 November 2019
PDF: 7 pages
Proc. SPIE 11181, High-Power Lasers and Applications X, 111810F (19 November 2019); doi: 10.1117/12.2538422
Show Author Affiliations
Yanshan Wang, Institute of Applied Electronics (China)
Nanjing Univ. of Science and Technology (China)
Key Lab. of Science and Technology on High Energy Laser (China)
Zhe Chang, Institute of Applied Electronics (China)
Key Lab. of Science and Technology on High Energy Laser (China)
Graduate School of China Academy of Engineering Physics (China)
Yi Ma, Institute of Applied Electronics (China)
Key Lab. of Science and Technology on High Energy Laser (China)
Wanjing Peng, Institute of Applied Electronics (China)
Key Lab. of Science and Technology on High Energy Laser (China)
Weiwei Ke, Institute of Applied Physics and Computational Mathematics (China)
Key Lab. of Science and Technology on High Energy Laser (China)
Yinhong Sun, Institute of Applied Electronics (China)
Key Lab. of Science and Technology on High Energy Laser (China)
Rihong Zhu, Nanjing Univ. of Science and Technology (China)
Chun Tang, Institute of Applied Electronics (China)
Key Lab. of Science and Technology on High Energy Laser (China)


Published in SPIE Proceedings Vol. 11181:
High-Power Lasers and Applications X
Ruxin Li; Upendra N. Singh; Shibin Jiang, Editor(s)

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