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Author Schmidsfeld, A. von ♦ Reichling, M.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ ACCURACY ♦ ATOMIC FORCE MICROSCOPY ♦ CONTROL ♦ DETECTION ♦ DISTANCE ♦ FIBERS ♦ FLEXIBILITY ♦ INTERFERENCE ♦ INTERFEROMETERS ♦ LOSSES ♦ MECHANICS ♦ TUNING
Abstract In a non-contact atomic force microscope, based on interferometric cantilever displacement detection, the optical return loss of the system is tunable via the distance between the fiber end and the cantilever. We utilize this for tuning the interferometer from a predominant Michelson to a predominant Fabry-Pérot characteristics and introduce the Fabry-Pérot enhancement factor as a quantitative measure for multibeam interference in the cavity. This experimentally easily accessible and adjustable parameter provides a control of the opto-mechanical interaction between the cavity light field and the cantilever. The quantitative assessment of the light pressure acting on the cantilever oscillating in the cavity via the frequency shift allows an in-situ measurement of the cantilever stiffness with remarkable precision.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-09-21
Publisher Place United States
Journal Applied Physics Letters
Volume Number 107
Issue Number 12


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