Tin telluride quantum dots as a new saturable absorber for a mode-locked Yb+ doped fiber laser

Junpeng Qiao, Safayet Ahmed, Ping Kwong Cheng, Long Hui Zeng, Jia Zhao, Yuen Hong Tsang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)


Tin telluride (SnTe), a member of group IV-VI semiconductors, has attracted significant attention due to its super thermoelectricity and ferroelectricity. In addition, SnTe was reported to have a direct bandgap (0.18 eV) and relatively good oxidation resistance, therefore, it has huge application potential in optoelectronics. However, up to now, the study of interaction between light and SnTe is still immature. In this paper, SnTe quantum dots (QDs) were prepared by the ultrasonication assisted liquid-phase exfoliation (UALPE) method and the broadband absorption properties of SnTe QDs were demonstrated. Furthermore, by employing SnTe QDs as a saturable absorber (SA), a stable mode-locked Yb-doped fiber laser (YDFL) with a pulse duration of 265 ps and an output power of 5.68 mW was obtained. Our results demonstrated that SnTe could be a promising candidate in the mode-locked YDFL system and photonic technology application.

Original languageEnglish
Article number107258
JournalOptics and Laser Technology
Publication statusPublished - Oct 2021


  • 2D materials
  • Quantum dots
  • SnTe
  • Yb mode-locked fiber laser

ASJC Scopus subject areas

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

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