| Download | - View final version: High-frequency torsional motion transduction using optomechanical coupled oscillators (PDF, 4.9 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1364/OPTICA.473187 |
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| Author | Search for: Kaviani, Hamidreza1; Search for: Behera, Bishnupada1; Search for: Hajisalem, Ghazal1ORCID identifier: https://orcid.org/0000-0001-8202-461X; Search for: Luiz, Gustavo de OliveiraORCID identifier: https://orcid.org/0000-0003-3592-5639; Search for: Lake, David P.1ORCID identifier: https://orcid.org/0000-0002-0218-3555; Search for: Barclay, Paul E.1ORCID identifier: https://orcid.org/0000-0002-9659-5883 |
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| Affiliation | - National Research Council of Canada. Nanotechnology
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| Funder | Search for: Natural Sciences and Engineering Research Council of Canada; Search for: Alberta Innovates—Technology Futures; Search for: Canadian Foundation for Innovation; Search for: National Research Council Canada |
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| Format | Text, Article |
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| Abstract | Using light to measure an object’s motion is central to operating mechanical sensors that probe forces and fields. Cavity optomechanical systems embed mechanical resonators inside optical resonators. This enhances the sensitivity of optomechanical measurements, but only if the mechanical resonator does not spoil the properties of the optical cavity. For example, cavity optomechanical detection of resonators made from optically absorbing materials, or whose geometry does not possess suitable spatial symmetry, is challenging. Here we demonstrate a system that overcomes challenges in measuring high-frequency twisting motion of a nanodisk by converting them to vibrations of a photonic crystal cavity. Optomechanical readout of the cavity then enables measurement of the nanodisk’s torsional resonances with sensitivity 5.1×10⁻²¹−1.2×10⁻¹⁹ Nm/√Hz for a mechanical frequency range of 5–800 MHz. The nanodisk can be outfitted with magnetic nanostructures or metasurfaces without affecting the optical properties of the cavity, making the system suitable for torque magnetometry and structured light sensing. |
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| Publication date | 2023-01-05 |
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| Publisher | Optica Publishing Group |
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| Copyright statement | - © 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
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| Licence | |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 59220ce8-97b7-4a85-918d-0a4aa4309ef2 |
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| Record created | 2023-08-08 |
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| Record modified | 2023-10-05 |
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