A hybrid plasmonic microresonator with high quality factor and small mode volume

Lu, Qijing; Chen, Daru; Wu, Guojiao; Peng, Baojin; Jia-dong, XU

doi:10.1088/2040-8978/14/12/125503

Cited by 18 publications

(5 citation statements)

References 16 publications

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“…The hybrid plasmonic-photonic mode, which combines the localization of the plasmonic mode and the ultra-low loss of the cavity mode, offers an effective way to enhance the sensitivity. The hybrid microcavity can be realized by either coating a thin layer of plasmonic materials, [124][125][126][127][128] or attaching single plasmonic particles to the cavity (Figure 11a). [129,130] Several experiments have demonstrated plasmonic enhancement of the field for single nanoparticle detection using hybrid microcavities.…”

Section: Sensitivity Enhancementmentioning

confidence: 99%

Single Nanoparticle Detection Using Optical Microcavities

et al. 2017

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Detection of nanoscale objects is highly desirable in various fields such as early-stage disease diagnosis, environmental monitoring and homeland security. Optical microcavity sensors are renowned for ultrahigh sensitivities due to strongly enhanced light-matter interaction. This review focuses on single nanoparticle detection using optical whispering gallery microcavities and photonic crystal microcavities, both of which have been developing rapidly over the past few years. The reactive and dissipative sensing methods, characterized by light-analyte interactions, are explained explicitly. The sensitivity and the detection limit are essentially determined by the cavity properties, and are limited by the various noise sources in the measurements. On the one hand, recent advances include significant sensitivity enhancement using techniques to construct novel microcavity structures with reduced mode volumes, to localize the mode field, or to introduce optical gain. On the other hand, researchers attempt to lower the detection limit by improving the spectral resolution, which can be implemented by suppressing the experimental noises. We also review the methods of achieving a better temporal resolution by employing mode locking techniques or cavity ring up spectroscopy. In conclusion, outlooks on the possible ways to implement microcavity-based sensing devices and potential applications are provided.

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Section: Sensitivity Enhancementmentioning

confidence: 99%

Single Nanoparticle Detection Using Optical Microcavities

et al. 2017

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“…Both dielectric nano-and microstructures can be combined with plasmonic elements. The optoplasmonic structures of interest in this section are, thus, sub-divided into three subgroups: (A) colloidal structures containing metallic and dielectric NPs (characteristic length ∼100 nm) [133][134][135][136], (B) optoplasmonic hybrid structures containing plasmonic nanoantennas and few μm large dielectric microstructures (figure 3) [137][138][139][140][141][142], and (C) plasmonic nanoantennas localized in the evanescent field of large (tens to hundreds of μm) high Q dielectric resonators (figure 4) [143][144][145][146]. The three types of optoplasmonic structures have different performance criteria and application spaces.…”

Section: Discrete Optoplasmonic Hybrids: Combining Plasmonic Nanoante...mentioning

confidence: 99%

Optoplasmonics: basic principles and applications

Yan

Reinhard

2019

J. Opt.

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Plasmonic and photonic elements often have complementary optical properties, motivating the development of ‘optoplasmonic’ hybrid systems in which the photonic and plasmonic elements can synergistically interact. The overall goal in the design of optoplasmonic structures is to overcome the limitations of the individual building blocks or to generate entirely new properties that reach beyond what is possible with conventional photonic or plasmonic structures. After providing a brief introduction into the relevant optical properties of plasmonic and photonic building blocks, this manuscript reviews optoplasmonic architectures that contain plasmonic nanoantennas embedded in a defined photonic environment generated by discrete dielectric nanoparticles (NPs), microcavities, waveguides, or photonic crystals, as well as all-metal NP or metal/dielectric NP hybrid arrays in which diffracted modes interact with the plasmons of metal NPs. The fundamental working principles of these optoplasmonic systems are analyzed and selected applications and fabrication strategies are discussed.

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“…2(a), by tapering two opposite branches of a commercially available 3-dB X-coupler, and fabricating the probe incorporating a 270-nm-diameter bent Ag nanowire, optical resonance can be established inside the closed loop (see red dashed box in Fig. The Qfactor of the hybrid cavity, obtained from the full width at half-maximum (fwhm) of the resonant peak, is about 6 × 10 6 , higher than many other hybrid photon-plasmon cavity reported so far [30][31][32]. For optical characterization, a tunable laser (Model: New Focus 6528-LN, linewidth<0.1pm) and an optical power meter (Model: dBm Optics 4650) are used to measure the transmission spectrum.…”

Section: Closed-loop All-fiber Hybrid Photon-plasmon Resonatorsmentioning

confidence: 99%

All-fiber hybrid photon-plasmon circuits: integrating nanowire plasmonics with fiber optics

Li¹,

Li²,

Guo³

et al. 2013

Opt. Express

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We demonstrate all-fiber hybrid photon-plasmon circuits by integrating Ag nanowires with optical fibers. Relying on near-field coupling, we realize a photon-to-plasmon conversion efficiency up to 92% in a fiber-based nanowire plasmonic probe. Around optical communication band, we assemble an all-fiber resonator and a Mach-Zehnder interferometer (MZI) with Q-factor of 6 × 10(6) and extinction ratio up to 30 dB, respectively. Using the MZI, we demonstrate fiber-compatible plasmonic sensing with high sensitivity and low optical power.

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A hybrid plasmonic microresonator with high quality factor and small mode volume

Cited by 18 publications

References 16 publications

Single Nanoparticle Detection Using Optical Microcavities

Single Nanoparticle Detection Using Optical Microcavities

Optoplasmonics: basic principles and applications

All-fiber hybrid photon-plasmon circuits: integrating nanowire plasmonics with fiber optics

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