Browsing Electronic Engineering and Computer Science by Author "Wallis, R"
Now showing items 1-5 of 5
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Active Terahertz Modulator and Slow Light Metamaterial Devices with Hybrid Graphene-superconductor Coupled Split-ring Resonator Arrays
Kalhor, S; Kindness, SJ; Wallis, R; Beere, HE; Ghanaatshoar, M; Degl'innocenti, R; Kelly, MJ; Hofmann, S; Joyce, HJ; Ritchie, DA (2022-01-01)The dynamically tunable terahertz (THz) waves and electromagnetically induced transparency (EIT) in coupled hybrid superconducting niobium-graphene split-ring resonator arrays are investigated. Active modulation of THz ... -
Active Terahertz Modulator and Slow Light Metamaterial Devices with Hybrid Graphene-Superconductor Photonic Integrated Circuits.
Kalhor, S; Kindness, SJ; Wallis, R; Beere, HE; Ghanaatshoar, M; Degl'Innocenti, R; Kelly, MJ; Hofmann, S; Joyce, HJ; Ritchie, DA (2021-11-08)Metamaterial photonic integrated circuits with arrays of hybrid graphene-superconductor coupled split-ring resonators (SRR) capable of modulating and slowing down terahertz (THz) light are introduced and proposed. The ... -
An Antenna-Coupled Dual-Gated Electron Channel as Direct Detector of 2 THz Radiation
Michailow, W; Waldie, J; Spencer, P; Almond, N; Kindness, S; Wu, Y; Wei, B; Wallis, R; Mitchell, T; Degl'innocenti, R (2020-11-08)An antenna-coupled dual-gated two-dimensional electron gas (2DEG) based on a GaAs-AlGaAs heterostructure shows a pronounced response to 2 THz radiation. The device is shown to be a direct detector, and its photoresponse ... -
An in-plane photoelectric effect in two-dimensional electron systems for terahertz detection.
Michailow, W; Spencer, P; Almond, NW; Kindness, SJ; Wallis, R; Mitchell, TA; Degl'Innocenti, R; Mikhailov, SA; Beere, HE; Ritchie, DA (2022-04-15)Many mid- and far-infrared semiconductor photodetectors rely on a photonic response, when the photon energy is large enough to excite and extract electrons due to optical transitions. Toward the terahertz range with photon ... -
The in-plane photoelectric effect: A new quantum mechanism of detecting terahertz radiation in a two-dimensional electron system
Michailow, W; Spencer, P; Almond, N; Kindness, S; Wallis, R; Mitchell, T; Degl'innocenti, R; Mikhailov, S; Beere, H; Ritchie, D (2022-01-01)We report on the discovery of a new quantum phenomenon in a 2D electron gas (2DEG) that enables efficient THz detection [1]. In this effect, electrons absorb THz photons and jump on an artificially created, electrically ...