Mechanical overtone frequency combs

Abstract

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.

References in corpus (11)

• A Spin Entanglement Witness for Quantum Gravity
• Motional Quantum Ground State of a Levitated Nanoparticle from Room Temperature
• Hyperfine phononic frequency comb
• Stellar Spectroscopy in the Near-infrared with a Laser Frequency Comb
• Symmetry-breaking induced frequency combs in graphene resonators
• Spatial modulation of nonlinear flexural vibrations of membrane resonators
• Superconducting cavity piezo-electromechanics: the realization of an acoustic frequency comb at microwave frequencies
• Generation of Ultra-Low Power Phononic Combs
• Frequency comb from a single driven nonlinear nanomechanical mode
• Hybridized Frequency Combs in Multimode Cavity Electromechanical System
• Mechanical dissipation by substrate-mode coupling in SiN resonators

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• Spatial mapping of intrinsic and readout nonlinearities in a strongly-driven micromechanical membrane
• Frequency comb in a macroscopic mechano-magnetic artificial spin ice
• Nonlinear Dynamical Regimes of Cosmological Frequency Combs