2014
DOI: 10.1364/josab.31.001339
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Resonant metamaterial absorbers for infrared spectral filtering: quasimodal analysis, design, fabrication, and characterization

Abstract: We present a modal analysis of metal-insulator-metal (MIM)-based metamaterials in the far infrared region. These structures can be used as resonant reflection bandcut spectral filters that are independent of the polarization and direction of incidence. We show that this resonant reflection dip is due to the excitation of quasimodes (modes associated with a complex frequency) leading to quasi-total absorption. We have fabricated large area samples made of chromium nanorod gratings on top of Si/Cr layers deposit… Show more

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Cited by 21 publications
(17 citation statements)
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References 43 publications
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“…For numerical methods which rely on PMLs to fulfil the outgoing‐wave conditions, the numerical modes are often called PML‐modes . There are two types of PML‐modes.…”
Section: Overview Of Qnm Solversmentioning
confidence: 99%
See 1 more Smart Citation
“…For numerical methods which rely on PMLs to fulfil the outgoing‐wave conditions, the numerical modes are often called PML‐modes . There are two types of PML‐modes.…”
Section: Overview Of Qnm Solversmentioning
confidence: 99%
“…The present period is marked by a deployment of QNM concepts in various applications, quantum plasmonics, spectral filtering with diffraction gratings, energy loss spectroscopy in plasmonic nanostructures, second‐harmonic generation in metal nanoparticles, coupled cavity‐waveguide systems, single‐photon antennas, ultrafast‐dynamics nanooptics, scattering‐matrix reconstruction in complex systems, spontaneous emission at exceptional points, wave transport in disordered media, spatial coherence in complex media, mode hybridization and exceptional points in complex photonic structures, random lasing, light localization and cooperative phenomena in cold atomic clouds, spatially nonlocal response in plasmonic nanoresonators, and thermal emission . We discuss some of these numerous applications of QNM concepts in this Review and Figure summarizes a few.…”
Section: Introductionmentioning
confidence: 99%
“…That is due to the infinite number of modes around the resonance ω 0 [21] and to the divergence of the residues T q and R q as ε(z)→1. This divergence is then compensated by the 1/z q factor in (12), but in this case it is needed to include many summation terms to ensure convergence.…”
Section: Test Case: 1-d Dispersive Resonatormentioning
confidence: 99%
“…The metal-dielectric plasmonic structures for frequency-selective and broadband absorbers are also of practical interest. Such structures for the complete absorption of radiation in the far IR region were considered in [17].…”
Section: Introductionmentioning
confidence: 99%