All-fiber passively mode-locked thulium-doped fiber ring laser using optically deposited graphene saturable absorbers

Qingqing Wang, Tong Chen, Botao Zhang, Mingshan Li, Yongfeng Lu, Kevin P. Chen

Research output: Contribution to journalArticle

88 Scopus citations

Abstract

An all-fiber passively mode-locked thulium-doped fiber ring oscillator is constructed using optically deposited few layer graphene micro-sheets as the saturable absorber (SA). The mode-lock operation was achieved by 130-mW pump power at 1.5-μm. The fiber oscillator produces 2.1-ps soliton pulse output with 80-pJ per pulse energy. The 3-dB bandwidth of the laser output was measured as 2.2-nm. The RF signal-to-noise ratio of 50-dB and sub 20-Hz 3-dB bandwidth of the laser output confirms the stable laser operation with low time jittering. This paper shows that graphene can be an effective saturable absorber for the development of mid-IR fiber mode-locked laser.

Original languageEnglish (US)
Article number131117
JournalApplied Physics Letters
Volume102
Issue number13
DOIs
StatePublished - Apr 1 2013

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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