High efficiency mode-locked, cylindrical vector beam fiber laser based on a mode selective coupler


We propose and demonstrate an all-fiber passively mode-locked laser with a figure-8 cavity, which generates pulsed cylindrical vector beam output based on a mode selective coupler (MSC). The MSC made of a two mode fiber and a standard single mode fiber is used as both the intracavity transverse mode converter and mode splitter with a low insertion loss of about 0.65 dB. The slope efficiency of the fiber laser is > 3%. Through adjusting the polarization state in the laser cavity, both radially and azimuthally polarized beams have been obtained with high mode purity which are measured to be > 94%. The laser operates at 1556.3 nm with a spectral bandwidth of 3.2 nm. The mode-locked pulses have duration of 17 ns and a repetition rate of 0.66 MHz.

Publication DOI: https://doi.org/10.1364/OE.25.011444
Divisions: Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Engineering & Applied Sciences > Aston Institute of Photonics Technology
Uncontrolled Keywords: Atomic and Molecular Physics, and Optics
Full Text Link: https://www.osa ... =oe-25-10-11444
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2017-05-15
Published Online Date: 2017-05-08
Accepted Date: 2017-05-04
Submitted Date: 2017-03-31
Authors: Wan, Hongdan
Wang, Jie
Zhang, Zuxing
Cai, Yu
Sun, Bin
Zhang, Lin ( 0000-0002-1691-5577)

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