Gain-Assisted Plasmon Resonance Narrowing and Its Application in Sensing

Meng, Lijun; Zhao, Ding; Yang, Yuanqing; Abajo, F. Javier García de; Li, Qiang; Ruan, Zhichao; Qiu, Min

doi:10.1103/physrevapplied.11.044030

Cited by 23 publications

(11 citation statements)

References 57 publications

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“…A FOM* of ≈87 was achieved by detecting the intensity changes under different dielectric materials (air and water). Following this work, metal nanoparticles, [201] metamaterial, [150] and all-metal plasmonic absorber [75] have been designed for sensors via using SLRs, [202] multipolar resonance, [201] Fano resonance, [203] PIT, [116] gain-assisted resonance, [204] etc. Due to the coherent interference between radiation and subradiation modes, Fano resonances and GMRs are more sensitive to trace the change of the refractive index.…”

Section: Sensors With High Sensitivitymentioning

confidence: 99%

High‐Q Plasmonic Resonances: Fundamentals and Applications

Wang

et al. 2021

Advanced Optical Materials

150

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Subwavelength confinement of light with plasmonics is promising for nanophotonics and optoelectronics. However, it is nontrivial to obtain narrow plasmonic resonances due to the intrinsically high optical losses and radiative damping in metallic structures. In this review, a thorough summary of the recent research progress on achieving high‐quality (high‐Q) factor plasmonic resonances is provided, emphasizing the fundamentals and six resonant mode types, including surface lattice resonances, multipolar resonances, plasmonic Fano resonances, plasmon‐induced transparency, guided‐mode resonances, and Tamm plasmon resonances. The applications of high‐Q plasmonic resonances in spectrally selective thermal emission, sensing, single‐photon emission, filtering, and band‐edge lasing are also discussed.

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Section: Sensors With High Sensitivitymentioning

confidence: 99%

High‐Q Plasmonic Resonances: Fundamentals and Applications

Wang

et al. 2021

Advanced Optical Materials

150

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“…Other parameters are optimized with p = 2.0 µm, N = 10, w = 1.0 µm, h = 1.0 µm, θ = 0 • and t = 1.027 µm. Figure 2a shows that, at E f = 0.2 eV, there is an absorption peak at the wavelength of 5.14803 µm with a full width half maximum (FWHM) of 0.055 nm, which is much less than those with metallic metamaterials [21][22][23][24][25]. The parameters used in the next parts are the same as those in Figure 2a if they are not specified.…”

Section: Resultsmentioning

confidence: 99%

“…However, for sensing and coherent thermal emission source applications, the narrower the absorption bandwidth is, the better performance it will have [18,19]. Thus, to achieve better performance, many schemes have been proposed to narrow the absorption bandwidths for ultra-narrowband absorbers [20][21][22][23][24][25]. Unlike the conventional metal metamaterials, dielectric metamaterials have almost no absorption loss; therefore, their use provides an extremely efficient way to produce ultra-narrowband absorbers [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Small-Angle Ultra-Narrowband Tunable Mid-Infrared Absorber Composing from Graphene and Dielectric Metamaterials

et al. 2021

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We report a small-angle ultra-narrowband mid-infrared tunable absorber that uses graphene and dielectric metamaterials. The absorption bandwidth of the absorber at the graphene Fermi level of 0.2 eV is 0.055 nm, and the absorption peaks can be tuned from 5.14803 to 5.1411 μm by changing the graphene Fermi level. Furthermore, the resonance absorption only occurs in the angle range of several degrees. The simulation field distributions show the magnetic resonance and Fabry–Pérot resonance at the resonance absorption peak. The one-dimensional photonic crystals (1DPCs) in this absorber act as a Bragg mirror to efficiently reflect the incidence light. The simulation results also show that the bandwidth can be further narrowed by increasing the resonance cavity length. As a tunable mid-infrared thermal source, this absorber can possess both high temporal coherence and near-collimated angle characteristics, thus providing it with potential applications.

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“…Recently, many strategies have been proposed to achieve extremely sharp plasmon resonances by mitigating their internal or/and radiative losses. [ 12–39 ] For instance, utilizing alternative plasmonic materials [ 12,13 ] or gain materials [ 14,15 ] have been demonstrated as an effective method to suppress the nonradiative losses. More efforts have been made to suppress the radiative damping by creating various unconventional plasmon resonances, such as Fano resonances, [ 16–19 ] surface lattice resonances (SLRs), [ 20–27 ] quasi‐bound states in the continuum (quasi‐BIC), [ 28–32 ] and Tamm plasmon resonances.…”

Section: Introductionmentioning

confidence: 99%

Ultrasmooth Gold Nanogroove Arrays: Ultranarrow Plasmon Resonators with Linewidth down to 2 nm and Their Applications in Refractive Index Sensing

Shen

Zou

et al. 2021

Adv Funct Materials

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Plasmonic nanostructures offer an enticing prospect in many applications, ranging from lasing to biosensing, due to their unrivaled light concentration beyond the diffraction limit. However, this promise is substantially undercut by the intrinsically high losses in metals. Here, an experimental ultra‐high‐Q plasmon resonance with a linewidth down to 2 nm (Q‐factor ≈ 350) and a resonance intensity of 51% in an ultrasmooth gold nanogroove array is reported. Such an experimental ultranarrow resonance arises from two key factors. First, a geometrical‐induced coupling between the Fabry–Pérot and Wood's anomaly modes significantly suppresses the groove array's radiative damping. Second, an ultrasmooth gold surface fabricated by template stripping minimizes its surface scattering and grain boundary scattering. Benefiting from this ultranarrow resonance, a figure of merit (FOM) of 284 and an FOM* of 617 in refraction index (RI) sensing under normally incident detection are demonstrated, the former of which is the record FOM in all reported broad‐RI‐range plasmonic RI sensors. The array is further demonstrated as a surface thickness sensor for detecting mercaptocarboxylic acids with the surface sensitivity of 0.18 nm/CH2, which suggests that the array is a promising platform for thickness detection of surface analytes and label‐free biomedical sensing.

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Gain-Assisted Plasmon Resonance Narrowing and Its Application in Sensing

Cited by 23 publications

References 57 publications

High‐Q Plasmonic Resonances: Fundamentals and Applications

High‐Q Plasmonic Resonances: Fundamentals and Applications

Small-Angle Ultra-Narrowband Tunable Mid-Infrared Absorber Composing from Graphene and Dielectric Metamaterials

Ultrasmooth Gold Nanogroove Arrays: Ultranarrow Plasmon Resonators with Linewidth down to 2 nm and Their Applications in Refractive Index Sensing

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