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Force microscopy using common-path optical-heterodyne interferometer

This paper proposes a common-path optical-heterodyne interferometer for developing a very stable force microscope. The deflections of the force-sensing cantilever are detected by the optical heterodyne method which reduces low-frequency noise. The optical system is a common-path interferometer using...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 1991-03, Vol.30 (3), p.587-590
Main Authors: KIKUTA, H, ASAI, S, YOSUKOCHI, H, IWATA, K
Format: Article
Language:English
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Summary:This paper proposes a common-path optical-heterodyne interferometer for developing a very stable force microscope. The deflections of the force-sensing cantilever are detected by the optical heterodyne method which reduces low-frequency noise. The optical system is a common-path interferometer using a Wollaston prism, which reduces the effects of mechanical vibrations and perturbation of the optical path length. In this paper, we proposed the optical system, constructed a system and measured the surface profile of optical disk grooves.
ISSN:0021-4922
1347-4065
DOI:10.1143/jjap.30.587