Femtometer-amplitude imaging of coherent super high frequency vibrations in micromechanical resonators.

ABSTRACT: Dynamic measurement of femtometer-displacement vibrations in mechanical resonators at microwave frequencies is critical for a number of emerging high-impact technologies including 5G wireless communications and quantum state generation, storage, and transfer. However, the resolution of continuous-wave laser interferometry, the method most commonly used for imaging vibration wavefields, has been limited to vibration amplitudes just below a picometer at several gigahertz. This is insufficient for these technologies since vibration amplitudes precipitously decrease for increasing frequency. Here we present a stroboscopic optical sampling approach for the transduction of coherent super high frequency vibrations. Phase-sensitive absolute displacement detection with a noise floor of 55 fm/√Hz fo

SUBMITTER: Shao L 

PROVIDER: S-EPMC8816924 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature