ArticleMicrosystems & nanoengineering2021
Overcoming thermo-optical dynamics in broadband nanophotonic sensing.
Article in Microsystems & nanoengineering, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Temperature invariant metasurfaces.Nanophotonics (Berlin, Germany) · 2023Article
- Beating thermal noise in a dynamic signal measurement by a nanofabricated cavity optomechanical sensor.Science advances · 2023Article
- Very-high-frequency probes for atomic force microscopy with silicon optomechanics.Microsystems & nanoengineering · 2022Article
- Sensing Using Light: A Key Area of Sensors.Sensors (Basel, Switzerland) · 2021Article
- Controlled growth of a single carbon nanotube on an AFM probe.Microsystems & nanoengineering · 2021Article
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Authors and funding
3 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Advances in integrated photonics open up exciting opportunities for batch-fabricated optical sensors using high-quality-factor nanophotonic cavities to achieve ultrahigh sensitivities and bandwidths. The sensitivity improves with increasing optical power; however, localized absorption and heating within a micrometer-scale mode volume prominently distorts the cavity resonances and strongly couples the sensor response to thermal dynamics, limiting the sensitivity and hindering the measurement of broadband time-dependent signals. Here, we derive a frequency-dependent photonic sensor transfer function that accounts for thermo-optical dynamics and quantitatively describes the measured broadband optomechanical signal from an integrated photonic atomic force microscopy nanomechanical probe. Using this transfer function, the probe can be operated in the high optical power, strongly thermo-optically nonlinear regime, accurately measuring low- and intermediate-frequency components of a dynamic signal while reaching a sensitivity of 0.7 fm/Hz
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