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	Numerical analysis of interaction and perturbation between evanescent field and probe in optical field detection by SNOM
	Xu Tiejun ; Xu Jiying ; Wang Jia ; Tian Qian
	2010-05-10 ; 2010-05-10
关键词	Theoretical or Mathematical/ finite difference time-domain analysis nanostructured materials near-field scanning optical microscopy optical fibres optical variables measurement probes/ evanescent probe optical field detection scanning near-field optical microscope SNOM metal-coated fiber probe aperture evanescent field finite-difference time-domain method FDTD sub-wavelength aperture scanning height nanostructure aperture size imaging system/ A0760P Optical microscopy A4281W Other fibre optical devices and techniques A0260 Numerical approximation and analysis
中文摘要	The interaction and the perturbation between a metal-coated fiber probe and an aperture evanescent field is analyzed numerically using finite-difference time-domain (FDTD) method. The simulation model consists of a sub-wavelength aperture and a metal-coated fiber probe scanning in constant height mode. Influences of the scanning height and the aperture size of the fiber probe on optical field detection are discussed. Relationship between the measured optical field and the initial optical field without perturbation is compared and analyzed. The research results reveal that when the aperture size of the probe is comparable with the measured nanostructure and the scanning height is close to half of the aperture size, the measured field distribution shows better similarity with the initial one, that is to say, it can describe the initial one accurately.
语种	中文 ; 中文
出版者	Science Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/24857]
专题	清华大学
推荐引用方式 GB/T 7714	Xu Tiejun,Xu Jiying,Wang Jia,et al. Numerical analysis of interaction and perturbation between evanescent field and probe in optical field detection by SNOM[J],2010, 2010.
APA	Xu Tiejun,Xu Jiying,Wang Jia,&Tian Qian.(2010).Numerical analysis of interaction and perturbation between evanescent field and probe in optical field detection by SNOM..
MLA	Xu Tiejun,et al."Numerical analysis of interaction and perturbation between evanescent field and probe in optical field detection by SNOM".(2010).

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