Contrast Reversal of Topography Artifacts in a Transmission SNOM

Chin. Phys. Lett.

2005, Vol. 22

Issue (9): 2186-2189 DOI:

Original Articles

Contrast Reversal of Topography Artifacts in a Transmission SNOM

LI Zhi;WANG Shu-Feng;ZHANG Jia-Sen;GONG Qi-Huang

Department of Physics and State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871

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LI Zhi, WANG Shu-Feng, ZHANG Jia-Sen et al 2005 Chin. Phys. Lett. 22 2186-2189

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Abstract We demonstrate the contrast reversal behaviour of topography artifacts by changing the diameter of the collection diaphragm in a transmission scanning near-field optical microscopy (SNOM). This originates from the change of the approach curves. Such contrast reversal phenomenon is used to distinguish the artifact signal from the true optical signal of the SNOM image. We also show that continuously changing the diaphragm to a proper diameter can greatly reduce topography artifacts.

Keywords: 07.79.Fc 68.37.Uv 87.64.Xx

Published: 01 September 2005

PACS:	07.79.Fc	(Near-field scanning optical microscopes)
	68.37.Uv	(Near-field scanning microscopy and spectroscopy)
	87.64.Xx

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2005/V22/I9/02186

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	LI Zhi
	WANG Shu-Feng
	ZHANG Jia-Sen
	GONG Qi-Huang

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