Mesoporous Carbon Nanospheres as Broadband Saturable Absorbers for Pulsed Laser Generation

Fang Wang, Ying Jing, Zhe Kang, Libo Zhou, Zhenrui Li, Mingyi Liu, Tao Wang, Chuanfei Yao, Haobin Chen, Weiping Qin, Zhen An Qiao, Guanshi Qin, Changfeng Wu

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Broadband pulsed laser generation is demonstrated by using mesoporous carbon nanospheres (MCNs) as saturable absorbers (SAs). The MCNs are prepared by a “silica-assisted” method, and then mixed with sodium carboxymethylcellulose (NaCMC) to form the MCNs film. The film not only shows strong absorption from visible to mid-infrared spectral region, but also possesses the nonlinear saturable absorption properties. As the MCNs film is inserted into the laser cavity, a mode-locked laser at 1 µm and Q-switched lasers at 1.56 and 2 µm are realized, respectively. In addition, by depositing the MCNs onto tapered fiber as an SA, a mode-locked fiber laser at 2 µm is also demonstrated. The results show that MCNs are promising SA material for broadband pulsed laser generation.

Original languageEnglish
Article number1800606
JournalAdvanced Optical Materials
Volume6
Issue number16
DOIs
StatePublished - 20 Aug 2018
Externally publishedYes

Keywords

  • Q-switched lasers
  • mesoporous carbon nanospheres
  • mode-locked lasers
  • pulsed laser generation
  • saturable absorbers

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