Matches in SemOpenAlex for { <https://semopenalex.org/work/W3089879130> ?p ?o ?g. }
- W3089879130 abstract "Due to their high force sensitivity, mechanical resonators combining low mechanical dissipation with a small motional mass are highly demanded in fields as diverse as resonant force microscopy, mass sensing, or cavity optomechanics. “Soft-clamping” is a phononic engineering technique by which mechanical modes of highly stressed membranes or strings are localized away from lossy regions, thereby enabling ultrahigh-Q for ng-scale devices. Here, we report on parasitic modes arising from the finite size of the structure, which can significantly degrade the performance of these membranes. Through interferometric measurements and finite-element simulations, we show that these parasitic modes can hybridize with the localized modes of our structures, reducing the quality factors by up to one order of magnitude. To circumvent this problem, we engineer the spectral profile of the parasitic modes in order to avoid their overlap with the high-Q defect mode. We verify via a statistical analysis that the quality factors of devices fabricated with this modal engineering technique are consistently closer to the value predicted by dissipation dilution theory. We expect this method to find applications in a broad range of contexts such as optomechanical cooling, resonant force microscopy, swept-frequency sensing, or hybrid quantum networks." @default.
- W3089879130 created "2020-10-08" @default.
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- W3089879130 date "2020-12-21" @default.
- W3089879130 modified "2023-09-27" @default.
- W3089879130 title "Edge mode engineering for optimal ultracoherent silicon nitride membranes" @default.
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- W3089879130 doi "https://doi.org/10.1063/5.0031626" @default.
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