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Proceedings Paper

Design of very large-mode-area Yb-doped photonic crystal fiber for high-energy pulsed laser output with squared shape
Author(s): Kuo Meng; Lianqing Zhu; Guang Yan; Fei Luo
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Paper Abstract

The rare earth-doped active fibers owning ten thousands of square-micron core-area but also delivering laser with high beam quality have little been reported. In this paper, we have designed a large-mode-area Yb3+-doped photonic crystal fiber in the cladding region with square-array air holes. Simulations demonstrate that only fundamental mode (FM) with mode-field-area (MFA) of ~15500 μm2 can be amplified and propagated at the gain saturation, and the beam quality M2 is less than 1.5. It is predicted that almost 58 mJ per-pulse can be available from such a 1.0 meter-length fiber, and the beam shape of amplified laser is near squared. It will be potential for so huge pulse-energy output from the VLMA LPF to be applied in the remote detecting, high-intensive welding and so on.

Paper Details

Date Published: 4 May 2015
PDF: 6 pages
Proc. SPIE 9543, Third International Symposium on Laser Interaction with Matter, 95431N (4 May 2015); doi: 10.1117/12.2181837
Show Author Affiliations
Kuo Meng, Beijing Information Science and Technology Univ. (China)
Lianqing Zhu, Beijing Information Science and Technology Univ. (China)
Guang Yan, Beijing Information Science and Technology Univ. (China)
Fei Luo, Beijing Information Science and Technology Univ. (China)


Published in SPIE Proceedings Vol. 9543:
Third International Symposium on Laser Interaction with Matter
Yury M. Andreev; Zunqi Lin; Xiaowu Ni; Xisheng Ye, Editor(s)

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