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THz Instruments for Space

Siegel, Peter H. (2007) THz Instruments for Space. IEEE Transactions on Antennas and Propagation, 55 (11, Pa). pp. 2957-2965. ISSN 0018-926X. doi:10.1109/TAP.2007.908557.

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Terahertz technology has been driven largely by applications in astronomy and space science. For more than three decades cosmochemists, molecular spectroscopists, astrophysicists, and Earth and planetary scientists have used submillimeter-wave or terahertz sensors to identify, catalog and map lightweight gases, atoms and molecules in Earth and planetary atmospheres, in regions of interstellar dust and star formation, and in new and old galaxies, back to the earliest days of the universe, from both ground based and more recently, orbital platforms. The past ten years have witnessed the launch and successful deployment of three satellite instruments with spectral line heterodyne receivers above 300 GHz (SWAS, Odin, and MIRO) and a fourth platform, Aura MLS, that reaches to 2520 GHz, crossing the terahertz threshold from the microwave side for the first time. The former Soviet Union launched the first bolometric detectors for the submillimeter way back in 1974 and operated the first space based submillimeter wave telescope on the Salyut 6 station for four months in 1978. In addition, continuum, Fourier transform and spectrophotometer instruments on IRAS, ISO, COBE, the recent Spitzer Space Telescope and Japan's Akari satellite have all encroached into the submillimeter from the infrared using direct detection bolometers or photoconductors. At least two more major satellites carrying submillimeter wave instruments are nearing completion, Herschel and Planck, and many more are on the drawing boards in international and national space organizations such as NASA, ESA, DLR, CNES, and JAXA. This paper reviews some of the programs that have been proposed, completed and are still envisioned for space applications in the submillimeter and terahertz spectral range.

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Siegel, Peter H.0000-0002-2539-4646
Additional Information:© Copyright 2007 IEEE. Reprinted with permission. Manuscript received October 2, 2006. [Posted online: 2007-11-12] Hopefully, the author has not offended too many people or institutions by inadvertently neglecting to mention their programs or their proposals. He expresses his deep regret and apologizes in advance for these omissions. For the information that is contained within the paper, the author would like to make the following acknowledgements. First to all the past and current members of the JPL Submillimeter Wave Advanced Technology team for their many contributions to the field of space THz technology and with whom the author has been associated for the past 12 years. He would also like to acknowledge the following individuals who provided information or references used in this review article: Dr. P. Goldsmith (JPL), Dr. A.I. Nosich (Kharkov, Ukraine) and Prof. Y. Kuleshov of the P.N. Lebedev Physics Institute, Russia, for the information on the submillimeter telescope on Salyut 6. Mr. I. Galin (NGC, Azusa, CA) for references on DMSP. This work was carried out at the Jet Propulsion Laboratory and the California Institute of Technology under grants from the National Institutes of Health, and the National Aeronautics and Space Administration.
Subject Keywords:Space instruments, submillimeter wave, terahertz (THz).
Issue or Number:11, Pa
Record Number:CaltechAUTHORS:SIEieeetap07
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9340
Deposited By: Archive Administrator
Deposited On:14 Dec 2007
Last Modified:08 Nov 2021 20:58

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