Nonlinear optical properties of Cu nanocluster composite fabricated by 180 keV ion implantation |
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Authors: | Y.H. Wang Y.M. Wang J.D. Lu L.L. Ji R.G. Zang R.W. Wang |
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Affiliation: | aHubei Province Key Laboratory of Systems Science in Metallurgical Process Wuhan University of Science and Technology, Wuhan 430081, China;bDepartment of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China |
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Abstract: | Metal nanocluster composite glass prepared by 180 keV Cu ions into silica with dose of 5×1016 ions/cm2 has been studied. The microstructural properties of the nanoclusters has been verified by optical absorption spectra and transmission electron microscopy (TEM). Third-order nonlinear optical properties of the nanoclusters were measured at 1064 and 532 nm excitations using Z-scan technique. The nonlinear refraction index, nonlinear absorption coefficient, and the real and imaginary parts of the third-order nonlinear susceptibility were deduced. Results of the investigation of nonlinear refraction by the off-axis Z-scan configuration were presented and the mechanisms responsible for the nonlinear response were discussed. Third-order nonlinear susceptibility χ(3) of this kind of sample was determined to be 8.7×10−8 esu at 532 nm and 6.0×10−8 esu at 1064 nm, respectively. |
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Keywords: | Ion implantation Cu nanoclusters Optical nonlinearity Z-scan |
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