Third-order optical nonlinearity of a novel material: [(C4H9)4N][Co(dmit)2] |
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| Authors: | 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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| Affiliation: | (1) Department of Optics, Shandong University, Jinan, 250100, China;(2) State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China;(3) Department of Electronic Engineering, City University of Hong Kong, Kowloon, Hong Kong, China |
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| Abstract: | 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. |
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