Investigation of high-sensitivity superconducting HEB mixers for Antarctic astronomy
China is now building an astronomical observatory including a THz telescope at Dome A on the Antarctic plateau. The development of superconducting HEB (Hot Electron Bolometer) mixers, the best choice for coherent detection at frequencies beyond 1 THz, becomes increasingly crucial. We present in this...
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ftobservparis:oai:HAL:tel-02095300v1 2024-05-19T07:29:09+00:00 Investigation of high-sensitivity superconducting HEB mixers for Antarctic astronomy Développement de mélangeurs HEB à supraconducteur et à haute sensibilité pour l'astronomie en Antarctique Zhou, Kang-Min Observatoire de Paris Université Paris Sciences et Lettres (PSL) Delorme, Yan 2015-09-30 https://hal.science/tel-02095300 https://hal.science/tel-02095300/document https://hal.science/tel-02095300/file/OBSPM_9234.pdf en eng HAL CCSD tel-02095300 https://hal.science/tel-02095300 https://hal.science/tel-02095300/document https://hal.science/tel-02095300/file/OBSPM_9234.pdf info:eu-repo/semantics/OpenAccess https://hal.science/tel-02095300 Astrophysics [astro-ph]. Observatoire de Paris, 2015. English. ⟨NNT : ⟩ astronomy Supraconducteurs Mélangeurs hyperfréquences Ondes décimillimétriques [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] info:eu-repo/semantics/doctoralThesis Theses 2015 ftobservparis 2024-04-25T01:36:24Z China is now building an astronomical observatory including a THz telescope at Dome A on the Antarctic plateau. The development of superconducting HEB (Hot Electron Bolometer) mixers, the best choice for coherent detection at frequencies beyond 1 THz, becomes increasingly crucial. We present in this manuscript the investigation of high-sensitivity superconducting HEB mixers using quasi-optical technology in the THz region. The main results of this study are as follows: 1. We measured the dielectric constant of high-resistivity silicon at 77 K and 295 K by a vector measurement system. The measured permittivity is adopted to simulate the far-field beam pattern of a quasi-optical superconducting HEB mixer. 2. We measured the far-field beam pattern of a superconducting HEB mixer by both near-field heterodyne measurement system and far-field direct detection measurement system. The measured results accord well with the simulation. We also investigated the effect of HEB bias voltages and bath temperature on the far-field beam-pattern. 3. We successfully developed a high-sensitivity superconducting HEB mixer at 1.3 THz. The uncorrected measured double-sideband noise temperature is 600 K, which is a state-of-the-art result at this frequency. We systematically characterized heterodyne performances such as RF noise, conversion gain and noise bandwidth. We also measured the frequency response and calibrated it with a new method. Furthermore, we investigated the performance of this superconducting HEB mixer integrated with different elliptical lenses. 4. Finally, we measured the noise performance and the frequency response of a HEB mixer coupled to a 0.1-1.5 THz spiral antenna, the frequency dependence of the noise temperature has also been characterized. This study has provided a further understanding of superconducting HEB mixers and allowed the realization of a HEB mixer with state-of-the-art sensitivity at 1.3 THz. Hence the results of this study can find good use in the 5 m terahertz telescope (DATE5) at Dome A. La ... Doctoral or Postdoctoral Thesis Antarc* Antarctic Antarctique* Archive de l'Observatoire de Paris (HAL) |
institution |
Open Polar |
collection |
Archive de l'Observatoire de Paris (HAL) |
op_collection_id |
ftobservparis |
language |
English |
topic |
astronomy Supraconducteurs Mélangeurs hyperfréquences Ondes décimillimétriques [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
spellingShingle |
astronomy Supraconducteurs Mélangeurs hyperfréquences Ondes décimillimétriques [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Zhou, Kang-Min Investigation of high-sensitivity superconducting HEB mixers for Antarctic astronomy |
topic_facet |
astronomy Supraconducteurs Mélangeurs hyperfréquences Ondes décimillimétriques [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
description |
China is now building an astronomical observatory including a THz telescope at Dome A on the Antarctic plateau. The development of superconducting HEB (Hot Electron Bolometer) mixers, the best choice for coherent detection at frequencies beyond 1 THz, becomes increasingly crucial. We present in this manuscript the investigation of high-sensitivity superconducting HEB mixers using quasi-optical technology in the THz region. The main results of this study are as follows: 1. We measured the dielectric constant of high-resistivity silicon at 77 K and 295 K by a vector measurement system. The measured permittivity is adopted to simulate the far-field beam pattern of a quasi-optical superconducting HEB mixer. 2. We measured the far-field beam pattern of a superconducting HEB mixer by both near-field heterodyne measurement system and far-field direct detection measurement system. The measured results accord well with the simulation. We also investigated the effect of HEB bias voltages and bath temperature on the far-field beam-pattern. 3. We successfully developed a high-sensitivity superconducting HEB mixer at 1.3 THz. The uncorrected measured double-sideband noise temperature is 600 K, which is a state-of-the-art result at this frequency. We systematically characterized heterodyne performances such as RF noise, conversion gain and noise bandwidth. We also measured the frequency response and calibrated it with a new method. Furthermore, we investigated the performance of this superconducting HEB mixer integrated with different elliptical lenses. 4. Finally, we measured the noise performance and the frequency response of a HEB mixer coupled to a 0.1-1.5 THz spiral antenna, the frequency dependence of the noise temperature has also been characterized. This study has provided a further understanding of superconducting HEB mixers and allowed the realization of a HEB mixer with state-of-the-art sensitivity at 1.3 THz. Hence the results of this study can find good use in the 5 m terahertz telescope (DATE5) at Dome A. La ... |
author2 |
Observatoire de Paris Université Paris Sciences et Lettres (PSL) Delorme, Yan |
format |
Doctoral or Postdoctoral Thesis |
author |
Zhou, Kang-Min |
author_facet |
Zhou, Kang-Min |
author_sort |
Zhou, Kang-Min |
title |
Investigation of high-sensitivity superconducting HEB mixers for Antarctic astronomy |
title_short |
Investigation of high-sensitivity superconducting HEB mixers for Antarctic astronomy |
title_full |
Investigation of high-sensitivity superconducting HEB mixers for Antarctic astronomy |
title_fullStr |
Investigation of high-sensitivity superconducting HEB mixers for Antarctic astronomy |
title_full_unstemmed |
Investigation of high-sensitivity superconducting HEB mixers for Antarctic astronomy |
title_sort |
investigation of high-sensitivity superconducting heb mixers for antarctic astronomy |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.science/tel-02095300 https://hal.science/tel-02095300/document https://hal.science/tel-02095300/file/OBSPM_9234.pdf |
genre |
Antarc* Antarctic Antarctique* |
genre_facet |
Antarc* Antarctic Antarctique* |
op_source |
https://hal.science/tel-02095300 Astrophysics [astro-ph]. Observatoire de Paris, 2015. English. ⟨NNT : ⟩ |
op_relation |
tel-02095300 https://hal.science/tel-02095300 https://hal.science/tel-02095300/document https://hal.science/tel-02095300/file/OBSPM_9234.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1799477765620105216 |