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Proceedings Paper

Topological insulators based passively Q-switched fiber laser with cylindrical-vector beam emission
Author(s): Ke Yan; Jian Lin; Yong Zhou; Chun Gu; Lixin Xu; Anting Wang; Qiwen Zhan
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Paper Abstract

Based on a few-mode fiber Bragg grating as polarization-selective output coupler and topological insulators Bi2Te3 as the saturable absorber, we propose a passively Q-switched fiber laser with cylindrical vector beam output. Both radially and azimuthally polarized beams can be readily generated, and the output polarization can be switchable through tuning the polarization controllers inside the laser cavity. The laser operates at the wavelength of 1557.5 nm with a 3 dB linewidth of less than 0.04 nm. The repetition rate of the Q-switched laser can be tuned from 31.54 kHz to 49.40 kHz when the pump power increases from 103.5 mW to 139.5 mW.

Paper Details

Date Published: 27 September 2016
PDF: 6 pages
Proc. SPIE 9950, Laser Beam Shaping XVII, 99500H (27 September 2016); doi: 10.1117/12.2235341
Show Author Affiliations
Ke Yan, Univ. of Science and Technology of China (China)
Jian Lin, Univ. of Science and Technology of China (China)
Yong Zhou, Univ. of Science and Technology of China (China)
Chun Gu, Univ. of Science and Technology of China (China)
Lixin Xu, Univ. of Science and Technology of China (China)
Anting Wang, Univ. of Science and Technology of China (China)
Qiwen Zhan, Univ. of Dayton (United States)


Published in SPIE Proceedings Vol. 9950:
Laser Beam Shaping XVII
Andrew Forbes; Todd E. Lizotte, Editor(s)

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