Reconstructing nonlinearities with intermodulation spectroscopy
2010 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 104, no 5, 050801- p.Article in journal (Refereed) Published
We describe a method of analysis which allows for reconstructing the nonlinear disturbance of a high Q harmonic oscillator. When the oscillator is driven with two or more frequencies, the nonlinearity causes intermodulation of the drives, resulting in a complicated spectral response. Analysis of this spectrum allows one to approximate the nonlinearity. The method, which is generally applicable to measurements based on resonant detection, increases the information content of the measurement without requiring large detection bandwidth, and optimally uses the enhanced sensitivity near resonance to extract information and minimize error due to detector noise.
Place, publisher, year, edition, pages
2010. Vol. 104, no 5, 050801- p.
Nonlinear oscillations, Atomic force microscopy
Other Physics Topics
IdentifiersURN: urn:nbn:se:kth:diva-11558DOI: 10.1103/PhysRevLett.104.050801ISI: 000274336800009ScopusID: 2-s2.0-76249130755OAI: oai:DiVA.org:kth-11558DiVA: diva2:277730
FunderSwedish Research Council
Uppdaterad från manuskript till artikel: 20100812 QC 201101262009-11-202009-11-202013-05-27Bibliographically approved