The determination of the thickness and the optical dispersion property of gold film using spectroscopy of a surface plasmon in the frequency domain  

作　　者：黄妍 叶红安 李松权 窦寅丰 

机构地区：[1]School of Electronic Engineering,Heilongjiang University

出　　处：《Chinese Physics B》2013年第2期419-425,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 61177079);the Open Fund of Key Laboratory of Electronics Engineering,College of Heilongjiang Province,China (Grant No. DZZD20100014);the Youth Science Foundation of Heilongjiang University,China (Grant No. QL200914)

摘　　要：We propose to use wavelength modulation approach,i.e.,the spectroscopy of a surface plasmon in the frequency domain,to characterize the optical dispersion property of gold film.Using this method,we determine the dispersion relationship of gold film in a wavelength range from 537.12 nm to 905.52 nm,and our results accord well with the reported results by other authors.This method is particularly suited for studying the optical dispersion properties of thin metal films,because a series of dielectric constants over a wide spectral range can be determined simultaneously via only a single scan of the incident angle,thereby avoiding the repeated measurements required when using the angular modulation approach.We propose to use wavelength modulation approach,i.e.,the spectroscopy of a surface plasmon in the frequency domain,to characterize the optical dispersion property of gold film.Using this method,we determine the dispersion relationship of gold film in a wavelength range from 537.12 nm to 905.52 nm,and our results accord well with the reported results by other authors.This method is particularly suited for studying the optical dispersion properties of thin metal films,because a series of dielectric constants over a wide spectral range can be determined simultaneously via only a single scan of the incident angle,thereby avoiding the repeated measurements required when using the angular modulation approach.

关 键 词：surface plasmon polaritons（SPPs） optical dispersion property gold film 

分 类 号：TN25[电子电信—物理电子学]