Esmaeil, Shahriari and Mat Yunus, Wan Mahmood (2010) Thermally induced nonlinear refraction of gold and silver polyvinvinylpyrrolidone nanofluid. Journal of Optoelectronics and Advanced Materials, 12 (11). pp. 2306-2310. ISSN 1454-4164
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The nonlinear refractive index of metal Au and Ag nano-fluids prepared by γ-radiation method was investigated by a single beam Z-scan technique. Under CW 532 nm laser excitation with power output of 40 mW, the Au and Ag nano-fluids show a large thermal-induced nonlinear refractive index. In the present work it was determined that the nonlinear refractive index for both Ag and Au nano-fluids are -4.80×10-8 cm2/W and -3.85×10-8 cm2/W respectively. The values of Δn0 for both samples were also calculated to be -2.05×10-4 and -1.64×10-4 respectively. Our measurements also confirmed that the nonlinear phenomenon was caused by the self-defocusing process making them good candidates for non linear optical devices.
|Keyword:||Nonlinear Refractive Index; Optical Materials; Nanoparticles|
|Faculty or Institute:||Faculty of Science|
|Publisher:||INOE Publishing House|
|Deposited By:||Najwani Amir Sariffudin|
|Deposited On:||14 May 2012 08:25|
|Last Modified:||14 May 2012 08:25|
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