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arXiv · 1809.04293

Passively Q-switching cylindrical vector beam fiber laser operating in high-order mode

Hongxun Li·Ke Yan·Yimin Zhang·Zhipeng Dong·Chun Gu·Peijun Yao·Lixin Xu·Rui Zhang·Jingqin Su·Wei Chen·Yonggang Zhu·Qiwen Zhan
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Abstract

We experimentally demonstrate a linear-cavity all-fiber passively Q-switching cylindrical vector beam (CVB) laser operating in high-order mode. This CVB fiber laser operates without any mode converter which always leads to high insertion loss, and it can realize high efficiency. In this fiber laser, the stable Q-switching pulse is achieved with a slope efficiency of 39%. By properly adjusting the polarization controllers, radially polarized and azimuthally polarized beams can be obtained. Our work proves the feasibility of achieving the stable Q-switching CVB pulse with high-order mode directly oscillating, and it may have an enormous potential for enhancing the efficiency.

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Hongxun Li, Ke Yan, Yimin Zhang, Zhipeng Dong, Chun Gu, Peijun Yao, Lixin Xu, Rui Zhang, Jingqin Su, Wei Chen, Yonggang Zhu, Qiwen Zhan. 2018-09-12. Passively Q-switching cylindrical vector beam fiber laser operating in high-order mode. https://doi.org/10.1088/2040-8986/ab2d9b

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