24 October 2013 LOCUS: Low cost upper atmosphere sounder
Author Affiliations +
Abstract
We present the results of an instrument concept study for a low cost terahertz sounder of the mesosphere and lower thermosphere (MLT). Recent advances in the development of Quantum Cascade Laser (QCL) technology to be used for Local Oscillators (LOs) mean that it has now become viable for the first time to build compact, low weight heterodyne receivers in the terahertz (THz) frequency range [28]. Some of the most important atmospheric constituents of the MLT region, e.g. atomic oxygen (O) and the hydroxyl radical (OH), can only realistically be measured at THz frequencies. The technical challenges of THz remote sensing result in a large uncertainly of the global distribution of these species. Recent research indicates that the MLT region exhibits links to processes associated with climate change. From this follows a strong need to measure the composition and dynamic of the MLT region more accurately and more comprehensively.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Daniel Gerber, Bruce M. Swinyard, Brian N. Ellison, John M. C. Plane, Wuhu Feng, Nimal Navarathinam, Stuart J. Eves, Rachel Bird, Edmund H. Linfield, A. Giles Davies, Steve Parkes, "LOCUS: Low cost upper atmosphere sounder", Proc. SPIE 8889, Sensors, Systems, and Next-Generation Satellites XVII, 88891I (24 October 2013); doi: 10.1117/12.2028675; https://doi.org/10.1117/12.2028675
PROCEEDINGS
18 PAGES


SHARE
RELATED CONTENT

GREAT: the German first light heterodyne instrument for SOFIA
Proceedings of SPIE (September 26 2007)
Monolithically integrated THz transceivers
Proceedings of SPIE (February 16 2011)
Integrated chip-scale THz technology
Proceedings of SPIE (May 13 2011)
Heterodyne spectrometers with very wide bandwidths
Proceedings of SPIE (February 17 2003)

Back to Top