Efficient optomechanical mode-shape mapping of micromechanical devices
arXiv:2105.07853 · doi:10.3390/mi12080880
Abstract
We demonstrate a method to optically map multiple modes of mechanical structures simultaneously. The fast and robust method, based on a modified phase-lock-loop, is demonstrated on a silicon nitride membrane and compared with three different approaches. Line traces and two-dimensional maps of different modes are acquired. The high quality enables us to determine the weights of individual contributions in superpositions of degenerate modes.
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