A tunable plasmonic resonator using kinetic 2D inductance and patch capacitance

Muravev, V. M.; Semenov, N. D.; Andreev, I. V.; Gusikhin, P. A.; Кукушкин, И. В.

doi:10.1063/5.0026034

Cited by 9 publications

(2 citation statements)

References 38 publications

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“…Metal contacts are inevitably present in any semiconductor-based photodetector, and may affect the device electrodynamics. Previously, a strong effect of contacts on eigenmodes of 2d plasmons was demonstrated experimentally [51,52]. Here, we show that metal contacts of moderate length have a strong impact on radiative coupling of plasmonic devices, and considerably Figure 3 substantiates our suggestions by showing the spectrum of cross section (a), the resonant frequency, and optimum momentum relaxation time (c) for 2DES with finite-length metal arms.…”

Section: Matching 2d Plasmons To Free Space With Metal Contactssupporting

confidence: 89%

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A place for two-dimensional plasmonics in electromagnetic wave detection

Mylnikov,

Svintsov

2021

Preprint

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Plasmons in two-dimensional electron systems (2DES) feature ultra-strong confinement and are expected to efficiently mediate the interactions between light and charge carriers. Despite these expectations, the electromagnetic detectors exploiting 2d plasmon resonance have been so far inferior to their non-resonant counterparts. Here, we theoretically analyse the origin of these failures, and suggest a proper niche for 2d plasmonics in electromagnetic wave detection. We find that a confined 2DES supporting plasmon resonance has an upper limit of absorption cross-section, which is identical to that of simple metallic dipole antenna. Small size of plasmonic resonators implies their weak dipole moments and impeded coupling to free-space radiation. Achieving the 'dipole limit' of absorption cross-section in isolated 2DES is possible either at unrealistically long carrier momentum relaxation times, or at resonant frequencies below units of terahertz. We further show that amendment of even small metal contacts to 2DES promotes the coupling and reduces the fundamental mode frequency. The contacted resonators can still have deep-subwavelength size. They can be merged into compact arrays of detectors, where signals from elements tuned to different frequencies are summed up. Such arrays may find applications in multi-channel wireless communications, hyper-spectral imaging, and energy harvesting.

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Section: Matching 2d Plasmons To Free Space With Metal Contactssupporting

confidence: 89%

“…The antenna impedance is mainly governed by its capacitive gap. The resonant frequency in this case is simply given by [52]…”

Section: Matching 2d Plasmons To Free Space With Metal Contactsmentioning

confidence: 99%

A place for two-dimensional plasmonics in electromagnetic wave detection

Mylnikov,

Svintsov

2021

Preprint

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Tunable terahertz phase shifter based on GaAs semiconductor technology

Muravev

Shuvaev

Астраханцева

et al. 2022

Applied Physics Letters

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We devised an electronically controllable plasmonic modulator capable of changing the phase of the transmitted electromagnetic wave. It is based on a well-established GaAs semiconductor technology. We demonstrate the phase tunability of the device over the range of up to [Formula: see text] at the insertion loss of −2.2 dB. The phase shifter operates at frequencies of up to 0.27 THz and temperatures of up to 80 K. The design is readily scalable to a planar phased array—a key component in beamforming technologies used in THz communication.

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Demonstration of the plasmonic THz phase shifter at room temperature

Dzhikirba,

Shuvaev,

Khudaiberdiev

et al. 2023

Applied Physics Letters

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We experimentally demonstrate that above 300 GHz, the plasmonic phase shifter can operate at up to room temperature. We investigate the temperature-dependent behavior of the phase shift introduced by a two-dimensional electron system in a GaAs/AlGaAs heterostructure. We find that the temperature-effected changes in the relaxation time and effective mass contribute most to the phase shifter performance. The physical model developed in the study shows good agreement with the experimental data. The results open up the prospects for the practical applications of plasmonics in the terahertz frequency gap.

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A tunable plasmonic resonator using kinetic 2D inductance and patch capacitance

Cited by 9 publications

References 38 publications

A place for two-dimensional plasmonics in electromagnetic wave detection

A place for two-dimensional plasmonics in electromagnetic wave detection

Tunable terahertz phase shifter based on GaAs semiconductor technology

Demonstration of the plasmonic THz phase shifter at room temperature

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