Actively mode-locked all fiber laser with cylindrical vector beam output

Yong Zhou, Anting Wang, Chun Gu, Biao Sun, Lixin Xu, Feng Li, Dick Chung, Qiwen Zhan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

80 Citations (Scopus)


We demonstrated an all fiber actively mode-locked laser that emits a cylindrical vector beam. An intra-cavity few-mode fiber Bragg grating inscribed in a short section of four-mode fiber is employed to provide mode selection and spectrum filtering functions. Mode coupling is achieved by offset splicing between the single-mode fiber and the four-mode fiberinthe lasercavity.ALiNbO3 Mach-Zehndermodulator is used to achieve active mode-locking in the laser. The laser operates at 1547 nm with 30 dB spectrum width of 0.2 nm. The mode-locked pulses have a duration of 2 ns and repetition of 12.06 MHz. Through adjusting the polarization state in the laser cavity, both radially and azimuthally polarized beams have been obtained with high mode purity.

Original languageEnglish
Pages (from-to)548-550
Number of pages3
JournalOptics Letters
Issue number3
Publication statusPublished - 1 Feb 2016

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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