Lateral plasmonic crystals: Tunability, dark modes, and weak-to-strong coupling transition

Gorbenko, Ilya; Kachorovskii, Valentin

doi:10.1103/physrevb.110.155406

Phys. Rev. B

2024

DOI: 10.1103/physrevb.110.155406

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Lateral plasmonic crystals: Tunability, dark modes, and weak-to-strong coupling transition

Ilya Gorbenko,

Valentin Kachorovskii

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Absorption Spectra of AlGaN/GaN Terahertz Plasmonic Crystals—Experimental Validation of Analytical Approach

Dub,

Sai,

Prystawko

et al. 2024

Nanomaterials

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Absorption spectra of AlGaN/GaN grating-gate plasmonic crystals with a period from 1 µm to 2.5 µm were studied experimentally at T = 70 K using Fourier-transform infrared spectrometry. The plasmonic crystals exhibit distinct absorption lines of various plasmon harmonics across the 0.5 to 6 THz frequency range, tunable by gate voltage. Cumbersome and time-consuming electromagnetic simulations are usually needed to interpret or predict the grating-gate crystal spectra. In this work, we examine an analytical model and show that it can successfully describe the majority of existing experimental results. In this way, we demonstrate a new analytical platform for designing plasmonic crystals for THz filters, detectors, and amplifiers.

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Absorption Spectra of AlGaN/GaN Terahertz Plasmonic Crystals—Experimental Validation of Analytical Approach

Dub,

Sai,

Prystawko

et al. 2024

Nanomaterials

View full text Add to dashboard Cite

show abstract

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Lateral plasmonic crystals: Tunability, dark modes, and weak-to-strong coupling transition

Cited by 1 publication

References 59 publications

Absorption Spectra of AlGaN/GaN Terahertz Plasmonic Crystals—Experimental Validation of Analytical Approach

Absorption Spectra of AlGaN/GaN Terahertz Plasmonic Crystals—Experimental Validation of Analytical Approach

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