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| Author | Tong, C.-Y. Edward; Meledin, Denis; Blundell, Raymond; Erickson, Neal; Kawamura, Jonathan; Mehdi, Imran; Gol'tsman, Gregory | ||||
| Title | A 1.5 THz hot-electron bolometer mixer operated by a planar diode-based local oscillator | Type  |
Abstract | ||
| Year | 2003 | Publication | Proc. 14th Int. Symp. Space Terahertz Technol. | Abbreviated Journal | Proc. 14th Int. Symp. Space Terahertz Technol. |
| Volume | Issue | Pages | 286 | ||
| Keywords | waveguide NbN HEB mixers | ||||
| Abstract | We describe a 1.5 THz heterodyne receiver based on a superconductin g hot-electron bolometer mixer, which is pumped by an all-solid-state local oscillator chain. The bolometer is fabricated from a 3.5 nm-thick niobium nitride film deposited on a quartz substrate with a 200 nm-thick magnesium oxide buffer layer. The bolometer measures 0.15 fun in width and 1.5 1..tm in length. The chip consisting of the bolometer and mixer circuitry is incorporated in a fixed-tuned waveguide mixer block with a corru g ated feed horn. The local oscillator unit comprises of a cascade of four planar doublers followin g a MMIC-based W-band power amplifier. The local oscillator is coupled to the mixer using a Martin-Puplett interferometer. The local oscillator output power needed for optimal receiver performance is approximately 1 to 2 11W, and the chain is able to provide this power at a number of frequency points between 1.45 and 1.56 THz. By terminating the rf input with room temperature and 77 K loads, a Y-factor of 1.11 (DSB) has been measured at a local oscillator frequency of 1.476 THz at 3 GHz intermediate frequency. | ||||
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| Notes | Approved | no | |||
| Call Number | Serial | 1501 | |||
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| Author | Смирнов, К. В. | ||||
| Title | AlGaAs/GaAs смеситель на эффекте разогрева двумерных электронов для тепловизора субмиллиметрового диапазона | Type |
Abstract | ||
| Year | 2003 | Publication | Тезисы докладов VI Российской конференции по физике полупроводников | Abbreviated Journal | |
| Volume | Issue | Pages | 181 | ||
| Keywords | 2DEG, AlGaAs/GaAs heterostructures, mixer | ||||
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| Address | ФТИ им. А. Ф. Иоффе, Санк-Петербург | ||||
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| Area | Expedition | Conference | VI Российской конференции по физике полупроводников (27-31 октября) | ||
| Notes | Unconfirmed; Сама конференция, однако, была -- её упоминают: [http://www.nsc.ru/HBC/article.phtml?nid=271&id=17], [https://www.isp.nsc.ru/institut/nauchnye-podrazdeleniya/lab-20/publikatsii/2003], [http://www.ioffe.ru/sem_tech/sem%5Fteh%5Fmovpe%5Fpublications%5Fru.htm#R2003], [https://istina.ips.ac.ru/collections/828771/] | Approved | no | ||
| Call Number | Serial | 1837 | |||
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| Author | Khosropanah, Pourya | ||||
| Title | NbN and NbTiN hot electron bolometer THz mixers | Type |
Book Whole | ||
| Year | 2003 | Publication | Chalmers University of Technology | Abbreviated Journal | |
| Volume | Issue | Pages | |||
| Keywords | HEB mixer, hot electron bolometer mixer, NbN, NbTiN, superconducting detector, heterodyne receiver, THz mixer, submillimeter mixer, quasioptical receiver, double slot antenna, twin slot antenna, spiral antenna, receiver noise, FTS, Fourier Transform Spectrometer | ||||
| Abstract | The thesis reports the development of Hot Electron Bolometer (HEB) mixers for radio astronomy heterodyne receivers in THz frequency range. Part of this work is the fabrication of HEB devices, which are based on NbN or NbTiN superconducting thin films (â‰<a4>5 nm). They are integrated with wideband spiral or double-slot planar antennas. The mixer chips are incorporated into a quasi-optical receiver. The experimental part of this work focuses on the characterization of the receiver as a whole, and the HEB mixers as a part. Double side band receiver noise temperature and the IF bandwidth are reported for frequencies from 0.7 THz up to 2.6 THz. The spectrum of the direct response of HEB integrated with dierent antennas are measured using Fourier Transform Spectrometer (FTS). The effect of the bolometer size on total receiver performance and the LO power requirements is also discussed. A high-yield and reliable process for fabrication of NbN HEB mixers have been achieved. Over 100 devices with different bolometer geometry, film property and also different antennas have been fabricated and measured. The measured data enables us to discuss the impact of different parameters to the receiver overall performance. This work has provided NbN HEB mixers to the following receivers: TREND (Terahertz REceiver with NbN HEB Device) operating at 1.25-1.5 THz, installed in AST/RO Submillimeter Wave Telescope, Amundsen/Scott South Pole Station, in 2002-2003. Band 6-low (1.410-1.700 THz) and 6-high (1.700-1.920 THz) of the HIFI (Heterodyne Instrument for Far Infra-red) in the Herschel Space Observatory, due to launch in 2007 by ESA (European Space Agency). Besides, there has been continuous efforts to develop better models to explain the mixer performance more accurately. They are based on two temperature model for electrons and phonons and solving one-dimensional heat balance equations along the bolometer. The principles of these models are illustrated and the calculated results are compared with measured data. |
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| Corporate Author | Thesis | Ph.D. thesis | |||
| Publisher | Chalmers University of Technology | Place of Publication | Göteborg | Editor | |
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| Notes | Approved | no | |||
| Call Number | Serial | 910 | |||
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| Author | Kostiuk, Theodor | ||||
| Title | Heterodyne spectroscopy in the thermal infrared region: a window on physics and chemistry | Type |
Conference Article | ||
| Year | 2003 | Publication | Proc. International Thermal Detectors Workshop (TDW'03), session 7 (Heterodyne detectors) | Abbreviated Journal | |
| Volume | Issue | Pages | |||
| Keywords | HgCdTe detector | ||||
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| Publisher | Place of Publication | 3501 University Boulevar East Adelphi, MD 20783 | Editor | University of Maryland Inn and Conference Center | |
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| Notes | Approved | no | |||
| Call Number | Serial | 372 | |||
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| Author | Stéphane Claude | ||||
| Title | Sideband-separating SIS mixer for ALMA band 7, 275–370 GHz | Type |
Conference Article | ||
| Year | 2003 | Publication | Proc. 14th Int. Symp. Space Terahertz Technol. | Abbreviated Journal | |
| Volume | Issue | Pages | 41 | ||
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| Publisher | Place of Publication | Tucson, USA | Editor | ||
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| Notes | Approved | no | |||
| Call Number | RPLAB @ s @ nt_SIS_60at0p34THz | Serial | 333 | ||
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