Hübers, Heinz-Wilhelm (2005) High Resolution Atmospheric and Astronomic Sensing at THz Frequencies. 35th Workshop: Physics & Technology of THz Photonics, 2005-07-26, Erice (Italy). (Unpublished)
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Abstract
The Terahertz (THz) part of the electromagnetic spectrum bears an amazing scientific potential in astronomy and atmospheric research. Many fundamental absorption and emission lines of astrophysical and atmospheric important molecules and atoms occur in this spectral region. Up to now more than one hundred molecules and atons habe been detected in space. There are fairly simple molecules such as CO but also molecules consisting og ten or more atoms have been detected. High resolution heterodyne spectroscopy of molecular rotational lines and fine structure lines of atoms or ions is a powerful tool which allows obtaining valuable information about the observed object such as temperature and dynamical processes as well as density and distribution of particular species. Among future astronomy missions equipped with THz heterodyne receivers are the Herschel Space Observatory and the Stratospheric Observatory for Infrared Astronomy. An instrument devoted to the investigation of the Earth's atmosphere is TELIS, the balloon borne THz and submm limb sounder. Applications and requirements for such receivers as well some key components are discussed. This includes local oscillators based on optically pumped gas lasers or solid-state lasers and low noise superconducting hot-electron bolometric mixers.
Item URL in elib: | https://elib.dlr.de/19746/ | ||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||
Title: | High Resolution Atmospheric and Astronomic Sensing at THz Frequencies | ||||||||
Authors: |
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Date: | 26 July 2005 | ||||||||
Open Access: | No | ||||||||
Gold Open Access: | No | ||||||||
In SCOPUS: | No | ||||||||
In ISI Web of Science: | No | ||||||||
Status: | Unpublished | ||||||||
Keywords: | Terahertz, Ferninfrarot, Fernerkundung, Heterodyn | ||||||||
Event Title: | 35th Workshop: Physics & Technology of THz Photonics | ||||||||
Event Location: | Erice (Italy) | ||||||||
Event Type: | international Conference | ||||||||
Event Date: | 26 July 2005 | ||||||||
Organizer: | International School of Solid State Physics | ||||||||
HGF - Research field: | Aeronautics, Space and Transport (old) | ||||||||
HGF - Program: | Space (old) | ||||||||
HGF - Program Themes: | W EW - Erforschung des Weltraums | ||||||||
DLR - Research area: | Space | ||||||||
DLR - Program: | W EW - Erforschung des Weltraums | ||||||||
DLR - Research theme (Project): | W - Projekt SOFIA (old) | ||||||||
Location: | Berlin-Adlershof | ||||||||
Institutes and Institutions: | Institute of Planetary Research > Terahertz and Infrared Sensors | ||||||||
Deposited By: | Hübers, Dr. Heinz-Wilhelm | ||||||||
Deposited On: | 10 Jan 2006 | ||||||||
Last Modified: | 24 Apr 2024 19:01 |
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