47 GHz narrow linewidth linear polarized fiber amplifier injected by a simple fiber oscillator laser seed source

Yanshan Wang; Zhe Chang; Yinhong Sun; Wanjing Peng; Yi Ma; Rihong Zhu; Chun Tang

doi:10.1117/12.2502099

5 November 2018 47 GHz narrow linewidth linear polarized fiber amplifier injected by a simple fiber oscillator laser seed source

Yanshan Wang, Zhe Chang, Yinhong Sun, Wanjing Peng, Yi Ma, Rihong Zhu, Chun Tang

Author Affiliations +

Proceedings Volume 10811, High-Power Lasers and Applications IX; 108110B (2018) https://doi.org/10.1117/12.2502099
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

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.

Citation Download Citation

Yanshan Wang, Zhe Chang, Yinhong Sun, Wanjing Peng, Yi Ma, Rihong Zhu, and Chun Tang "47 GHz narrow linewidth linear polarized fiber amplifier injected by a simple fiber oscillator laser seed source", Proc. SPIE 10811, High-Power Lasers and Applications IX, 108110B (5 November 2018); https://doi.org/10.1117/12.2502099

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