Cavity-enhanced optical detection of carbon nanotube Brownian motion

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2013
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Stapfner, Sebastian
Ost, Lukas
Hunger, David
Reichel, Jakob
Favero, Ivan
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Applied Physics Letters. 2013, 102(15), 151910. ISSN 0003-6951. eISSN 1077-3118. Available under: doi: 10.1063/1.4802746
Zusammenfassung

Optical cavities with small mode volume are well-suited to detect the vibration of sub-wavelength sized objects. Here we employ a fiber-based, high-finesse optical microcavity to detect the Brownian motion of a freely suspended carbon nanotube at room temperature under vacuum. The optical detection resolves deflections of the oscillating tube down to 70 pm=Hz1=2. A full vibrational spectrum of the carbon nanotube is obtained and confirmed by characterization of the same device in a scanning electron microscope. Our work extends the principles of high-sensitivity optomechanical detection to molecular scale nanomechanical systems.

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ISO 690STAPFNER, Sebastian, Lukas OST, David HUNGER, Jakob REICHEL, Ivan FAVERO, Eva M. WEIG, 2013. Cavity-enhanced optical detection of carbon nanotube Brownian motion. In: Applied Physics Letters. 2013, 102(15), 151910. ISSN 0003-6951. eISSN 1077-3118. Available under: doi: 10.1063/1.4802746
BibTex
@article{Stapfner2013Cavit-23393,
  year={2013},
  doi={10.1063/1.4802746},
  title={Cavity-enhanced optical detection of carbon nanotube Brownian motion},
  number={15},
  volume={102},
  issn={0003-6951},
  journal={Applied Physics Letters},
  author={Stapfner, Sebastian and Ost, Lukas and Hunger, David and Reichel, Jakob and Favero, Ivan and Weig, Eva M.},
  note={Article Number: 151910}
}
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