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Updated: Jun 14, 2026

Fabrication and Testing of Microfluidic Optomechanical Oscillators
Published on: May 29, 2014
New laser apparatus to measure oscillation amplitude down to picometer at megahertz frequencies
F Z Zhang1, S Walheim, T Schimmel
1Institute of Experimental Physics, Ulm University, 89069 Ulm, Germany.
Abstract:
A laser setup to study shear oscillations at small amplitudes with resonance frequencies up to 3 MHz is presented. The new approach combines gauging of the Gaussian laser beam and a lock-in amplifier. The device is tested with a 3 MHz AT-cut quartz crystal. The oscillation amplitude at the edge of the electrode on the quartz crystal is measured with a resolution of 2 pm.
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