Single-wall carbon nanotubes and graphene oxide-based saturable absorbers for low phase noise mode-locked fiber lasers

Research output: Contribution to journalArticleScientificpeer-review


  • Xiaohui Li
  • Kan Wu
  • Zhipei Sun
  • Bo Meng
  • Yonggang Wang
  • Yishan Wang
  • Xuechao Yu
  • Xia Yu
  • Ying Zhang
  • Perry Ping Shum
  • Qi Jie Wang

Research units

  • Singapore Institute of Manufacturing Technology
  • Shaanxi Normal University
  • Nanyang Technological University
  • Shanghai Jiao Tong University
  • Chinese Academy of Sciences


Low phase noise mode-locked fiber laser finds important applications in telecommunication, ultrafast sciences, material science, and biology, etc. In this paper, two types of carbon nano-materials, i.e. single-wall carbon nanotube (SWNT) and graphene oxide (GO), are investigated as efficient saturable absorbers (SAs) to achieve low phase noise mode-locked fiber lasers. Various properties of these wall-paper SAs, such as saturable intensity, optical absorption and degree of purity, are found to be key factors determining the performance of the ultrafast pulses. Reduced-noise femtosecond fiber lasers based on such carbon-based SAs are experimentally demonstrated, for which the phase noise has been reduced by more than 10 dB for SWNT SAs and 8 dB for GO SAs at 10 kHz. To the best of our knowledge, this is the first investigation on the relationship between different carbon material based SAs and the phase noise of mode-locked lasers. This work paves the way to generate high-quality low phase noise ultrashort pulses in passively mode-locked fiber lasers.


Original languageEnglish
Article number25266
Pages (from-to)1-9
Number of pages9
JournalScientific Reports
Publication statusPublished - 29 Apr 2016
MoE publication typeA1 Journal article-refereed

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