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Determination of optical parameters of ordered Ag/AAO nano-array composite structure

Shigeaki Zaima Wang Jian Wang Cheng-Wei Li Yan Liu Wei-Min

Determination of optical parameters of ordered Ag/AAO nano-array composite structure

Shigeaki Zaima, Wang Jian, Wang Cheng-Wei, Li Yan, Liu Wei-Min
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  • Received Date:  24 March 2005
  • Accepted Date:  30 April 2005
  • Published Online:  20 December 2005

Determination of optical parameters of ordered Ag/AAO nano-array composite structure

  • 1. (1)名古屋大学结晶材料科学系,日本名古屋 464-8603; (2)西北师范大学物理与电子工程学院,兰州 730070; (3)中国科学院兰州化学物理研究所固体润滑国家重点实验室,兰州 730070

Abstract: The optical transmission function is modified by taking account of the influence of thickness variation Δd on transmission of thin films. Meanwhile, we introduce an optimization technique and define an evaluating function, such that a simple method is developed based on the envelope curves of the optical transmission spectrum over the wavelength range 500—2700nm at normal incidence, which is used for the determination of the equivalent refractive index n, equivalent extinction coefficient k, average equivalent thickness d and thickness variation Δd of the ordered Ag/AAO nano-array composite structure. The relative error is about 0.3% in the calculation of average equivalent thickness . The simulated transmission of Ag/AAO nano-array composite structure is in satisfactory agreement with the measuremental values. All these results show that with this simple method the optical parameters of Ag/AAO nano-array composite structure can be calculated of accurately and the results are consistent with the experiment.

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