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Cavity-enhanced optical detection of carbon nanotube Brownian motion
2013
Applied Physics Letters
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 50pm/Hz^1/2. A full vibrational spectrum of the carbon nanotube is obtained and confirmed by characterization of the same device in a scanning
doi:10.1063/1.4802746
fatcat:yn5cbq77drb4leq44ll4up2qju