Hybrid plasmonic–photonic whispering gallery mode resonators for sensing: a critical review

Bozzola, Angelo; Perotto, Sara; Angelis, Francesco De

doi:10.1039/c6an02693a

Cited by 73 publications

(51 citation statements)

References 135 publications

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“…Recently, several groups including our own suggested that hybrid plasmonic-dielectric resonators can be constructed [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41], raising the idea that exactly this trade-off between confinement and Q can be reached. In this work we present a survey of the performance that should be available with hybrids if one assumes access to state-ofthe-art building block cavities and antennas.…”

Section: Introductionmentioning

confidence: 99%

Hybrid cavity-antenna systems for quantum optics outside the cryostat?

2019

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Hybrid cavity-antenna systems have been proposed to combine the sub-wavelength light confinement of plasmonic antennas with microcavity quality factors Q. Here, we examine what confinement and Q can be reached in these hybrid systems, and we address their merits for various applications in classical and quantum optics. Specifically, we investigate their applicability for quantum-optical applications at noncryogenic temperatures. To this end we first derive design rules for hybrid resonances from a simple analytical model. These rules are benchmarked against full-wave simulations of hybrids composed of state-of-the-art nanobeam cavities and plasmonic-dimer gap antennas. We find that hybrids can outperform the plasmonic and cavity constituents in terms of Purcell factor, and additionally offer freedom to reach any Q at a similar Purcell factor. We discuss how these metrics are highly advantageous for a high Purcell factor, yet weak-coupling applications, such as bright sources of indistinguishable single photons. The challenges for room-temperature strong coupling, however, are far more daunting: the extremely high dephasing of emitters implies that little benefit can be achieved from trading confinement against a higher Q, as done in hybrids. An attractive alternative could be strong coupling at liquid nitrogen temperature, where emitter dephasing is lower and this trade-off can alleviate the stringent fabrication demands required for antenna strong coupling. For few-emitter strong-coupling, high-speed and low-power coherent or incoherent light sources, particle sensing and vibrational spectroscopy, hybrids provide the unique benefit of very high local optical density of states, tight plasmonic confinement, yet microcavity Q.

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Section: Introductionmentioning

confidence: 99%

Hybrid cavity-antenna systems for quantum optics outside the cryostat?

2019

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“…To estimate the detection resolution, we use a commonly accepted criterion that shifts of 1/100 of the linewidth can be detected with an adequate signal-to-noise ratio [31,[33][34][35], and obtain the resolution of our sensor to be 0.16% RH, which is better than typical microfiber [9,31,[36][37][38][39] or metallic nanoparticle [40,41] based humidity sensors.…”

Section: Single-cavity-based Optical Rh Sensormentioning

confidence: 99%

Au nanorod–coupled microfiber optical humidity sensors

et al. 2019

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“…Hybrid microcavities have been reported to utilize the plasmon resonances to further enhance the light–matter interaction [ 85 , 86 , 87 , 88 , 89 ]. Advanced signal processing techniques such as self-reference differential detection, frequency locking (or phase locking detection) are developed to improve the signal and noise ratio (SNR) [ 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 , 98 ].…”

Section: Optofluidic Microcavities For Biosensorsmentioning

confidence: 99%

Advances of Optofluidic Microcavities for Microlasers and Biosensors

Feng

Bai

2018

Micromachines

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Optofluidic microcavities with high Q factor have made rapid progress in recent years by using various micro-structures. On one hand, they are applied to microfluidic lasers with low excitation thresholds. On the other hand, they inspire the innovation of new biosensing devices with excellent performance. In this article, the recent advances in the microlaser research and the biochemical sensing field will be reviewed. The former will be categorized based on the structures of optical resonant cavities such as the Fabry–Pérot cavity and whispering gallery mode, and the latter will be classified based on the working principles into active sensors and passive sensors. Moreover, the difficulty of single-chip integration and recent endeavors will be briefly discussed.

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Hybrid plasmonic–photonic whispering gallery mode resonators for sensing: a critical review

Abstract: In this review we present the state of the art and the most recent advances in the field of optical sensing with hybrid plasmonic–photonic whispering gallery mode (WGM) resonators.

Cited by 73 publications

References 135 publications

Hybrid cavity-antenna systems for quantum optics outside the cryostat?

Hybrid cavity-antenna systems for quantum optics outside the cryostat?

Au nanorod–coupled microfiber optical humidity sensors

Advances of Optofluidic Microcavities for Microlasers and Biosensors

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