Third-order nonlinear optical properties of thin sputtered gold films

详细信息    查看全文

• 作者：E. Xenogiannopoulou ; P. Aloukos ; S. Couris ; E. Kaminska ; A. Piotrowska ; E. Dynowska
• 关键词：Au films ; Third-order susceptibility ; Nonlinear optical properties ; Optical Kerr effect ; Z-scan
• 刊名：Optics Communications
• 出版年：2007
• 出版时间：1 July 2007
• 年：2007
• 卷：275
• 期：1
• 页码：217-222
• 全文大小：677 K

文摘

Au films of thickness ranging between 5 and 52 nm were prepared by sputtering on quartz substrates and their third-order nonlinear optical response was investigated by Optical Kerr effect (OKE) and Z-scan techniques using 532 nm, 35 ps laser pulses. All prepared films were characterized by XRD, AFM and UV–VIS–NIR spectrophotometry while their third-order susceptibility χ⁽³⁾ was measured and found to be of the order of 10⁻⁹ esu. The real and imaginary parts of the third-order susceptibility were found in very good agreement with experimental results and theoretical predictions reported by Smith et al. [D.D. Smith, Y. Yoon, R.W. Boyd, Y.K. Cambell, L.A. Baker, R.M. Crooks, M. George, J. Appl. Phys. 86 (1999) 6200].