Publication
Review of Scientific Instruments
Paper

Force microscope using a fiber-optic displacement sensor

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Abstract

A force microscope is described which uses a fiber-optic interferometer as the cantilever displacement sensor. Low thermal drift and reduced susceptibility to laser frequency variation are achieved due to the small (several micrometer) size of the interferometer cavity. A sensitivity of 1.7×10-4 Å/√Hz1/2 is observed for frequencies above 2 kHz. The drift rate of the sensor is on the order of 3 Å/min. As an initial demonstration, laser-written magnetic domains in a thin film sample of TbFeCo were imaged.

Date

01 Dec 1988

Publication

Review of Scientific Instruments

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