Submillimeter-Wave Detection with Submicron-Size Schottky-Barrier Diodes

McColl, M.; Hoidges, D.T.; Garber, W. A.

doi:10.1109/tmtt.1977.1129134

Cited by 27 publications

(4 citation statements)

References 15 publications

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“…In addition, compared to detectors based on the conventional, 3D photoelectric effect (HEIWIP and HIWIP), the potential step height V B is in situ gate-voltage tunable, and the presented mechanism offers detection at zero source-drain bias. Schottky detectors, which operate at the low-frequency end of the THz range, provide sensitive room temperature detection but have a rapid falloff of the responsivity with frequency ∼ω −2 ( 26 , 27 ), resulting in a low output above ∼1 THz. By contrast, the theoretically expected roll-off of the in-plane photoelectric effect is much weaker, ∼ω −1/2 .…”

Section: Discussionmentioning

confidence: 99%

“…To date, at the low-frequency end of the THz range, Schottky diodes provide highly sensitive room temperature detection with commercially available bandwidths of 40 GHz ( 25 ), but they suffer from rapidly decreasing responsivity ∼1/ω 2 above 1 THz, being restricted by the resistive-capacitive time constant ( 26 , 27 ). Detectors such as QWIPs, HIWIPs, and HEIWIPs show promising higher-frequency performance, but practical demonstrations show a rapid decrease toward the range of 2.5 to 3 THz from above ( 16 , 18 , 28 ).…”

Section: Introductionmentioning

confidence: 99%

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An in-plane photoelectric effect in two-dimensional electron systems for terahertz detection

et al. 2022

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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 energies of a few milli–electron volts, classical mechanisms are used instead. This is the case in two-dimensional electron systems, where terahertz detection is dominated by plasmonic mixing and by scattering-based thermal phenomena. Here, we report on the observation of a quantum, collision-free phenomenon that yields a giant photoresponse at terahertz frequencies (1.9 THz), more than 10-fold as large as expected from plasmonic mixing. We artificially create an electrically tunable potential step within a degenerate two-dimensional electron gas. When exposed to terahertz radiation, electrons absorb photons and generate a large photocurrent under zero source-drain bias. The observed phenomenon, which we call the “in-plane photoelectric effect,” provides an opportunity for efficient direct detection across the entire terahertz range.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An in-plane photoelectric effect in two-dimensional electron systems for terahertz detection

et al. 2022

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“…The differential conductance of HTS super‐Schottky diode is shown in Figure D. These devices have very low turn‐on voltage, extraordinarily low noise performance, and a high degree of nonlinearity, which enable high‐sensitivity microwave and video signal detection as well as microwave mixing …”

Section: Recent Progress In Applications Of Hts and Their Integrationmentioning

confidence: 99%

Thin‐Film‐Based Integrated High‐Transition‐Temperature Superconductor Devices

Balasubramanian

Xing

Strugo

et al. 2019

Adv Funct Materials

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Since the discovery of superconductivity at temperatures above the technologically promising liquid nitrogen temperatures, applications based on superconductors have expanded and are being put to commercial use. However, superconductivity at higher temperatures typically occurs in complex materials requiring stringent material and environmental constraints. Such restraints make the realization and integration of these materials with normal materials a nontrivial aspect. In this progress report, unique features of these superconductors in terms of their synthesis, physical properties determining interface electrical transport, and their applications are discussed. A detailed progress report on these applications with remarks on efforts taken to integrate these devices with traditional platforms and semiconducting materials is provided.

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“…Les diodes Schottky sont très largement utilisées comme détecteur entre 42 et 1 222 jum [46,47], et comme mélangeurs entre 70 et 1 300 pm [34,47,49,50] avec des MDP très faibles (Tableau I). Des multiplications de fréquence d'ordre élevé ( x 33) jusqu'à 2,52 THz ont pu être réalisées [48].…”

Section: Diodes a Pointes Effet D'antenne Dû Auunclassified

Synthèse et mesure des fréquences optiques

Jiménez¹

1979

Rev. Phys. Appl. (Paris)

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2014 Les lasers à gaz stabilisés en fréquence par absorption saturée sont actuellement acceptés comme étalons secondaires de fréquence et de longueur dans le domaine optique. Les caractéristiques de stabilité et reproductibilité en fréquence de ces différents lasers sont passées en revue. La synthèse de fréquences, par mélange dans un dispositif non linéaire à large bande passante de plusieurs faisceaux lasers, permet la mesure de fréquences comprises entre les micro-ondes et l'infrarouge proche. La synthèse à partir de deux lasers à gaz carbonique nous a permis de mesurer la fréquence du laser He-Ne à 88 THz (3,39 03BCm). La plage de mesure peut être élargie en utilisant les différents isotopes du CO2. Plusieurs types de dispositifs non linéaires sont capables de réaliser le mélange des fréquences optiques. Une étude de leurs caractéristiques comme détecteur et mélangeur montre les domaines respectifs possibles de fonctionnement. Plusieurs d'entre eux sont susceptibles de travailler à des fréquences infrarouges, et la possibilité d'étendre leur fonctionnement jusqu'au visible est signalée. L'utilisation de nouveaux dispositifs, tels que l'oscillateur à cavité supraconductrice et le laser à alcool méthylique (qui possèdent des raies d'émission très étroites), dans un nouveau schéma de raccordement entre les fréquences radioélectriques et optiques, permet d'envisager la mesure de la fréquence du laser à méthane à 3,39 03BCm avec une précision de l'ordre de 10-12. Abstract. 2014 Saturated-absorption stabilized gas lasers provide, in the optical region, accepted secondary frequency and length standards. Frequency stability and reproducibility of these lasers are reviewed. Using a broadband nonlinear device as a mixer, frequency synthesis of different lasers extend the frequency measurement range from microwaves to the near infrared. Using two carbon dioxide lasers, we have been able to measure the He-Ne laser frequency at 88 THz (3.39 03BCm). The frequency measurement range may be increased using different CO2 isotopes. Several nonlinear devices are able to mix optical frequencies from the submillimetric to the infrared wavelength. We review their characteristics as detectors and mixers, and we point out the possibility to extend it to the visible range. The use of new devices, the cavity stabilized superconducting oscillator and the methyl alcohol laser, with very narrow linewidths, inserted in a new laser frequency synthesis chain, should permit measurements of the methane laser frequency at 3.39 03BCm to parts in 1012.

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Submillimeter-Wave Detection with Submicron-Size Schottky-Barrier Diodes

Cited by 27 publications

References 15 publications

An in-plane photoelectric effect in two-dimensional electron systems for terahertz detection

An in-plane photoelectric effect in two-dimensional electron systems for terahertz detection

Thin‐Film‐Based Integrated High‐Transition‐Temperature Superconductor Devices

Synthèse et mesure des fréquences optiques

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