Nonlinear optical properties of Cu nanocluster composite fabricated by 180 keV ion implantation

✍ Scribed by Y.H. Wang; Y.M. Wang; J.D. Lu; L.L. Ji; R.G. Zang; R.W. Wang

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 263 KB
• Volume: 404
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2009.08.016

✦ Synopsis

Metal nanocluster composite glass prepared by 180 keV Cu ions into silica with dose of 5 Â 10 16 ions/cm 2 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 w (3) of this kind of sample was determined to be 8.7 Â 10 À8 esu at 532 nm and 6.0 Â 10 À8 esu at 1064 nm, respectively.