14.5 GHz passive harmonic mode-locking in a dispersion compensated Tm-doped fiber laser

Yazhou Wang; Jianfeng Li; Kundong Mo; Yanyan Wang; Fei Liu; Yong Liu

doi:10.1038/s41598-017-06326-5

Scientific Reports (Aug 2017)

14.5 GHz passive harmonic mode-locking in a dispersion compensated Tm-doped fiber laser

Yazhou Wang,
Jianfeng Li,
Kundong Mo,
Yanyan Wang,
Fei Liu,
Yong Liu

Affiliations

Yazhou Wang: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China
Jianfeng Li: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China
Kundong Mo: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China
Yanyan Wang: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China
Fei Liu: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China
Yong Liu: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China

DOI: https://doi.org/10.1038/s41598-017-06326-5
Journal volume & issue: Vol. 7, no. 1
pp. 1 – 6

Abstract

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Abstract We demonstrate a high repetition rate passive harmonic mode-locking (HML) based on nonlinear polarization evolution (NPE) technique in a Tm-doped ring fiber laser cavity. Small net anomalous cavity dispersion based on dispersion compensation benefited the generation of high repetition rate HML due to the low soliton splitting threshold. Stable HML with a repetition rate of up to 14.5 GHz and a super-mode suppression (SSR) of 19 dB was obtained at the center wavelength of 1982.3 nm, which is about ten times of state of the art at 2 μm band mode-locking fiber laser to our best knowledge. The repetition rate was selectable between 1 GHz to 14.5 GHz through changing the pump power and intra-cavity polarization state, and the SSR better than 25 dB was obtained as the repetition rate less than 5 GHz.

Published in Scientific Reports

ISSN: 2045-2322 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Medicine; Science
Website: https://www.nature.com/srep/

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