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Title: Ultrafast spectroscopy of super high frequency mechanical modes of doubly clamped beams

We use ultrafast pump-probe spectroscopy to study the mechanical vibrations in the time domain of doubly clamped silicon nitride beams. Beams with two different clamping conditions are investigated. Finite element method calculations are performed to analyse the mode spectra of both structures. By calculating the strain integral on the surface of the resonators, we are able to reproduce the effect of the detection mechanism and identify all the measured modes. We show that our spectroscopy technique combined with our modelling tools allow the investigation of several different modes in the super high frequency range (3-30 GHz) and above, bringing more information about the vibration modes of nanomechanical resonators.
Authors:
; ; ; ; ; ; ; ;  [1] ; ;  [2] ;  [3] ;  [4]
  1. Department of Physics and Center of Applied Photonics, University of Konstanz, D-78457 Konstanz (Germany)
  2. Helmholtz-Zentrum Dresden - Rossendorf, Institute of Ion-Beam Physics and Materials Research, D-01328 Dresden (Germany)
  3. IMMM, UMR-CNRS 6283, ENSIM, PRES UNAM, Université du Maine, 72085 Le Mans (France)
  4. LAUM, UMR-CNRS 6613, PRES UNAM, Université du Maine, 72085 Le Mans (France)
Publication Date:
OSTI Identifier:
22253881
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 23; Other Information: (c) 2013 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; BEAMS; DETECTION; FINITE ELEMENT METHOD; FREQUENCY RANGE; MECHANICAL VIBRATIONS; OSCILLATION MODES; PROBES; RESONATORS; SILICON NITRIDES; SIMULATION; SPECTRA; SPECTROSCOPY; STRAINS; SURFACES