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Excited-state nonlinear optical properties of metal cluster W2Ag4S8(dppf)2

  • Bin Dong
  • , Jifeng Zu
  • , Yachen Gao
  • , Yinglin Song
  • , Mingkai Lei*
  • *Corresponding author for this work
  • Dalian University of Technology
  • Chinese Academy of Sciences
  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

The nonlinear optical effect of metal cluster compound W2Ag4S8(dppf)2 was investigated using frequency-doubled, Q-switched Nd-YAG pulse laser system with wavelength of 532 nm and pulse width of 8 ns. The cluster W2Ag4S8(dppf)2 possessed reverse saturation absorption and self-focusing refraction. The nonlinear absorption and nonlinear refraction of the cluster W2Ag4S8(dppf)2 were explained with excited-state theory. The theoretical results are in agreement with the experimental data. The ratio of cross-section of the absorption of the excited-state to that of the ground-state Ka and the ratio of refraction volumes of the excited-state to that of the ground-state Kr were gained based on their simulation of numerical value. The effective third-order susceptibility x(3) determined for the cluster. The experiment results show that the cluster W2Ag4S8(dppf)2 has good optical limiting character for nanometer pulse.

Original languageEnglish
Pages (from-to)668-672
Number of pages5
JournalCailiao Yanjiu Xuebao/Chinese Journal of Materials Research
Volume18
Issue number6
StatePublished - Dec 2004

Keywords

  • Excited-state absorption
  • Excited-state refraction
  • Inorganic non-metallic materials
  • Materials
  • Metal cluster compound
  • Nonlinear optics
  • Z-scan

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