A nanoscale YBCO mixer optically coupled with a bow tie antenna

Rönnung, Fredrik; Cherednichenko, Serguei; Winkler, Dag; Gol’tsman, G.

doi:10.1088/0953-2048/12/11/348

Cited by 7 publications

(4 citation statements)

References 13 publications

(19 reference statements)

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“…HTSC belongs to the phonon cooled type and electron diffusion mechanism is negligible [209,223,224]. These receivers are noticeably noisier, compared to low temperature devices, as phonon dynamics play an appreciable role due to the relatively high operating tempe− rature and introduce of excess noise [225,226]. Actually, HTSC HEB mixers are not reaching the sensitivity of low temperature superconducting HEBs, but because of very short electron−phonon relaxation time (t eph »1.1 ps in YBaCuO [227] …”

Section: Superconducting Hot-electron Bolometersmentioning

confidence: 99%

Terahertz detectors and focal plane arrays

Rogalski

Сизов

2011

Opto-Electronics Review

318

225

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Terahertz (THz) technology is one of emerging technologies that will change our life. A lot of attractive applications in security, medicine, biology, astronomy, and non-destructive materials testing have been demonstrated already. However, the realization of THz emitters and receivers is a challenge because the frequencies are too high for conventional electronics and the photon energies are too small for classical optics. As a result, THz radiation is resistant to the techniques commonly employed in these well established neighbouring bands.In the paper, issues associated with the development and exploitation of THz radiation detectors and focal plane arrays are discussed. Historical impressive progress in THz detector sensitivity in a period of more than half century is analyzed. More attention is put on the basic physical phenomena and the recent progress in both direct and heterodyne detectors. After short description of general classification of THz detectors, more details concern Schottky barrier diodes, pair braking detectors, hot electron mixers and field-effect transistor detectors, where links between THz devices and modern technologies such as micromachining are underlined. Also, the operational conditions of THz detectors and their upper performance limits are reviewed. Finally, recent advances in novel nanoelectronic materials and technologies are described. It is expected that applications of nanoscale materials and devices will open the door for further performance improvement in THz detectors.

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Section: Superconducting Hot-electron Bolometersmentioning

confidence: 99%

Terahertz detectors and focal plane arrays

Rogalski

Сизов

2011

Opto-Electronics Review

318

225

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“…HTSC HEBs cannot be separated into two classes; they are mainly of the phonon cooled type because electron diffusion mechanisms are negligible in HTSC films, as experimentally deduced by Harnack et al [63]. The analysis of HTSC HEBs is quite different from their LTSC counterparts: phonon dynamics play a major role due to the relatively high operating temperature and introduce some excess noise in these devices [64,65]. Thus, they are not expected to reach the sensitivity of LTSC HEBs, but nevertheless they have potential advantages.…”

Section: Htsc Heb Design Principlesmentioning

confidence: 99%

Recent progress in high-temperature superconductor bolometric detectors: from the mid-infrared to the far-infrared (THz) range

Kreisler

Gaugue

2000

Supercond. Sci. Technol.

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This paper reviews and summarizes the progress in research on high-T c superconducting infrared bolometers since the discovery of high-temperature superconductor (HTSC) materials. After mentioning previous review articles and their particular themes in the introduction, we recall bolometer basics in section 2, where key parameters are presented and design principles summarized. The latter include incident radiation to HTSC thermometer coupling techniques (absorber and antenna approaches) and the thermal balance inside the active region. Section 3 (which forms the largest part of the article) is devoted to medium and near-infrared transition edge bolometers (0.8-20 µm wavelength range), covering both monolithic and composite (absorber coupled) devices. The main landmarks and state-of-the-art devices are described in the order of the increasing degree of technological complexity (thick substrates, thinned or suspended substrates, micromachined silicon-based structures), while keeping in mind the sensitivity versus time response compromise and the aimed competitiveness with photon detectors. The last section treats far-infrared (antenna coupled) hot electron bolometers (HEBs), whose emergence has benefited from newly developed superconducting nanostructures and which are promising candidates for terahertz heterodyne detection. Finally, recent results on both HTSC and (more mature) low-T c HEBs are given.

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“…The high resistivity provides a bolometer resistance on the order of -, which is suitable for integration with the majority of planar THz antennas. In general, there is no upper frequency limit for the YBCO bolometers, and efficient detection with YBCO nano-bolometers has been reported well into near IR [14], [15].…”

Section: Film Deposition and Device Fabricationmentioning

confidence: 99%

Low Noise Nanometer Scale Room-Temperature <formula formulatype="inline"><tex Notation="TeX">${\hbox{YBa}}_{2}{\hbox{Cu}}_{3}{\hbox{O}}_{7-x}$</tex> </formula> Bolometers for THz Direct Detection

Bevilacqua

Cherednichenko

2014

IEEE Trans. THz Sci. Technol.

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We present a detailed investigation of the responsivity and the noise in room temperature THz direct detectors made of YBa Cu O (YBCO) thin-film nano-bolometers. The YBCO nano-bolometers are integrated with planar spiral antennas covering a frequency range from 100 GHz to 2 THz. The detectors were characterized at 1.6 THz, 0.7 THz, 400 GHz and 100 GHz. The maximum electrical responsivity of 70 V/W and a minimum noise equivalent power (NEP) of 50 pW/Hz were measured, whereas the highest optical responsivity was 45 V/W. The noise in nano-bolometers is independent on the device volume and can be found as Hz for a given modulation frequency and a dc voltage .

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A nanoscale YBCO mixer optically coupled with a bow tie antenna

Cited by 7 publications

References 13 publications

Terahertz detectors and focal plane arrays

Terahertz detectors and focal plane arrays

Recent progress in high-temperature superconductor bolometric detectors: from the mid-infrared to the far-infrared (THz) range

Low Noise Nanometer Scale Room-Temperature <formula formulatype="inline"><tex Notation="TeX">${\hbox{YBa}}_{2}{\hbox{Cu}}_{3}{\hbox{O}}_{7-x}$</tex> </formula> Bolometers for THz Direct Detection

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