An actively Q-switched fiber laser with cylindrical vector beam generation

Jiaojiao Zhang, Zuxing Zhang, Yu Cai, Hongdan Wan, Zhiqiang Wang, Lin Zhang

Research output: Contribution to journalArticle

Abstract

We demonstrate an actively Q-switched fiber laser with cylindrical vector beam (CVB) emission using a few-mode fiber Bragg grating as the mode selection component and an acousto-optic modulator to achieve Q-switching. To the best of our knowledge, this is the first such demonstration. Using a linear cavity configuration, an actively Q-switched CVB with a pulse width of about 64 ns, a pulse energy of 4.25 µJ and a repetition rate of 20 kHz has been obtained. Moreover, by tuning the polarization controllers radially and azimuthally, polarized Q-switched beams can be excited separately with a polarization purity of  >94.5%. This compact Q-switched fiber laser with ns CVB pulse output could find potential applications in the field of material processing, nonlinear optics and so on.
Original languageEnglish
Pages (from-to)035107
JournalLaser Physics Letters
Volume15
Issue number3
DOIs
Publication statusPublished - 14 Feb 2018

Keywords

  • Q-switching, cylindrical vector beam, fiber Bragg grating

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