Nonlinear optical absorption studies of an organo-metallic complex by Z-scan technique |
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Authors: | J Sun GH Zhang LY Zhu D Xu |
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Institution: | a State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, PR China b Department of Optics, Shandong University, Jinan 250100, PR China |
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Abstract: | An organo-metallic complex, (CH3)4N]Ni(dmit)2] (dmit2− = (1,3-dithiole-2-thione-4,5-dithiolate), abbreviated as MeNi, is synthesized. The nonlinear optical absorption properties of MeNi dissolved in acetone have been studied using the open-aperture Z-scan technique with 40 ps pulse width at 1064 nm and 1 ns, 15 ns pulse width at 1053 nm, respectively. Strong saturable absorption has been found when the sample solution is irradiated by 40 ps and 1 ns laser pulses. While irradiated with 15 ns laser pulse, a stronger reverse saturable absorption has been found. The nonlinear optical absorption coefficients are −1.03 × 10−11 m/W, −1.85 × 10−11 m/W and 3.84 × 10−10 m/W, respectively. The mechanism responsible for the difference between the results is analyzed. All the results suggest that this material may be a promising candidate for the application to laser pulse compression in the near-infrared waveband. |
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Keywords: | 61 66 Hq 81 20 Ka 42 65 An |
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