Third-order optical nonlinearity of a novel material: [(C4H 9)4N][Co(dmit)2]

Q. Ren, X. Q. Wang, H. L. Yang, G. H. Zhang, X. B. Sun, W. F. Guo, F. J. Zhang, X. Zhang, Y. T. Chow, D. Xu

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3 Scopus citations


A novel dmit organometallic complex-[(C4H9) 4N][Co(dmit)2] (dmit2- = 4,5-dithiolate-1,3- dithiole-2-thione), abbreviated as BuCo, is synthesized and its third-order optical nonlinearity of the acetone solution is characterized using the Z-scan technique with a 40-ps pulse width at 1064 nm. Z-scan curves show that BuCo sample solution possesses the negative nonlinear refraction, exhibiting a self-defocusing effect. In addition, the two-photon absorption has been observed in BuCo. The effective molecular second-order hyperpolarizability γeff of the BuCo molecule was estimated to be as large as 5.60 × 10-31 esu, suggesting BuCo is a potential material for optical device applications.

Original languageEnglish (US)
Pages (from-to)1058-1061
Number of pages4
JournalLaser Physics
Issue number8
StatePublished - Aug 2007

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Condensed Matter Physics
  • Industrial and Manufacturing Engineering


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