Phase Noise Transfer in High-Q Quartz Phononic Frequency Combs

Wall, Walter S.; Kubena, R. L.; Yook, Yook-Kong; Koehl, J.; Joyce, Rick J.

doi:10.1109/ius46767.2020.9251410

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…These can, e.g., improve position sensing accuracy in optically opaque materials 28 such as underwater or medical imaging. Mechanical frequency combs can further be used to track and stabilize mechanical resonances 29,30 , and enhance Brillouin microscopy 31,32 . Recent proposals from the field of quantum acoustics 33 foresee an important role for devices with multiple mechanical modes with equal frequency spacing.…”

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confidence: 99%

Mechanical overtone frequency combs

et al. 2023

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Mechanical frequency combs are poised to bring the applications and utility of optical frequency combs into the mechanical domain. So far, their main challenge has been strict requirements on drive frequencies and power, which complicate operation. We demonstrate a straightforward mechanism to create a frequency comb consisting of mechanical overtones (integer multiples) of a single eigenfrequency, by monolithically integrating a suspended dielectric membrane with a counter-propagating optical trap. The periodic optical field modulates the dielectrophoretic force on the membrane at the overtones of a membrane’s motion. These overtones share a fixed frequency and phase relation, and constitute a mechanical frequency comb. The periodic optical field also creates an optothermal parametric drive that requires no additional power or external frequency reference. This combination of effects results in an easy-to-use mechanical frequency comb platform that requires no precise alignment, no additional feedback or control electronics, and only uses a single, mW continuous wave laser beam. This highlights the overtone frequency comb as the straightforward future for applications in sensing, metrology and quantum acoustics.

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