Nanomechanical displacement detection using fiber-optic interferometry

We describe a fiber-optic interferometer to detect the motion of nanomechanical resonators. In this system, the primary technical challenge of aligning the fiber-optic probe to nanometer-scale resonators is overcome by simply monitoring the scattered light from the devices. The system includes no fr...

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Bibliographic Details
Published in:Applied physics letters 2007-08, Vol.91 (9), p.093112-093112-3
Main Authors: Azak, N. O., Shagam, M. Y., Karabacak, D. M., Ekinci, K. L., Kim, D. H., Jang, D. Y.
Format: Article
Language:English
Subjects:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
FIBERS
INTERFEROMETERS
INTERFEROMETRY
LIGHT SCATTERING
NANOSTRUCTURES
RESONATORS
SENSORS
VISIBLE RADIATION
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Summary:We describe a fiber-optic interferometer to detect the motion of nanomechanical resonators. In this system, the primary technical challenge of aligning the fiber-optic probe to nanometer-scale resonators is overcome by simply monitoring the scattered light from the devices. The system includes no free-space optical components, and is thus simple, stable, and compact with an estimated displacement sensitivity of ∼ 0.3 pm ∕ Hz at optical power levels of ∼ 0.75 mW .
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2776981