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Bulk and integrated acousto-optic spectrometers for molecular astronomy with heterodyne spectrometersA survey of acousto-optic spectrometers for molecular astronomy is presented, noting a technique of combining the acoustic bending of a collimated coherent light beam with a Bragg cell followed by an array of sensitive photodetectors. This acousto-optic spectrometer has a large bandwidth, a large number of channels, high resolution, and is energy efficient. Receiver development has concentrated on high-frequency heterodyne systems for the study of the chemical composition of the interstellar medium. RF spectrometers employing acousto-optic diffraction cells are described. Acousto-optic techniques have been suggested for applications to electronic warfare, electronic countermeasures and electronic support systems. Plans to use integrated optics for the further miniaturization of acousto-optic spectrometers are described. Bulk acousto-optic spectrometers with 300 MHz and 1 GHz bandwidths are being developed for use in the back-end of high-frequency heterodyne receivers for astronomical research.
Document ID
19830032241
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Chin, G.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Buhl, D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Florez, J. M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1981
Subject Category
Astronomy
Meeting Information
Meeting: Infrared astronomy - Scientific/military thrusts and instrumentation
Location: Washington, DC
Start Date: April 21, 1981
End Date: April 22, 1981
Accession Number
83A13459
Distribution Limits
Public
Copyright
Other

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