Graphene mode-locked fiber laser at 2.8 μm

Gongwen Zhu, Xiushan Zhu, Fengqiu Wang, Shuo Xu, Yao Li, Xinli Guo, Kaushik Balakrishnan, R. A. Norwood, N. Peyghambarian

Research output: Contribution to journalArticlepeer-review

123 Scopus citations


Mid-infrared erbium (Er3+)-doped ZrF4-BaF2-LaF3-AlF3-NaF fiber laser mode-locked by multilayer graphene saturable absorber was demonstrated. Mode-locked pulses at 2.8 μm with an average output power of 18 mW at a repetition rate of 25.4 MHz, corresponding to a pulse energy of 0.7 nJ, were obtained. The pulsewidth was measured to be ∼42 ps by a home-made autocorrelator. Our experiment has validated the mode-locking capability of graphene in the 3-μm wavelength region.

Original languageEnglish (US)
Pages (from-to)7-10
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number1
StatePublished - Sep 15 2015


  • Erbium-doped ZBLAN fiber laser
  • Mid-infrared laser
  • Mode-locked laser

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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