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47 GHz narrow linewidth linear polarized fiber amplifier injected by a simple fiber oscillator laser seed source
Author(s): Yanshan Wang; Zhe Chang; Yinhong Sun; Wanjing Peng; Yi Ma; Rihong Zhu; Chun Tang
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Paper Abstract

In this paper, we demonstrate 47 GHz linear polarized fiber amplifier injected by a simple fiber oscillator laser seed source with narrow linewidth and near diffraction-limited beam quality. Output powers of 419 W, 778 W, and 1107 W are achieved with 3dB linewidth of 26.5 GHz, 41 GHz, and 47 GHz, respectively. The M2 is 1.25 in the x-direction and 1.23 in the y-direction at the maximum laser power, respectively. The measured PER is large than 96% during the power scaling process. However, The SRS is observed when the laser power is 1107, the SNR is about 47dB, which means that the SRS effect has become a serious limitation for further power scaling of such PM-amplifier seeded by the fiber oscillator laser seed source.

Paper Details

Date Published: 5 November 2018
PDF: 7 pages
Proc. SPIE 10811, High-Power Lasers and Applications IX, 108110B (5 November 2018); doi: 10.1117/12.2502099
Show Author Affiliations
Yanshan Wang, Institute of Applied Electronics (China)
Nanjing Univ. of Science and Technology (China)
The Key Lab. of Science and Technology on High Energy Laser (China)
Zhe Chang, Institute of Applied Electronics (China)
The Key Lab. of Science and Technology on High Energy Laser (China)
Yinhong Sun, Institute of Applied Electronics (China)
The Key Lab. of Science and Technology on High Energy Laser (China)
Wanjing Peng, Institute of Applied Electronics (China)
The Key Lab. of Science and Technology on High Energy Laser (China)
Yi Ma, Institute of Applied Electronics (China)
The 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)
The Key Lab. of Science and Technology on High Energy Laser (China)


Published in SPIE Proceedings Vol. 10811:
High-Power Lasers and Applications IX
Ruxin Li; Upendra N. Singh, Editor(s)

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