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A compact and stable acousto‐optical spectrometer
Author(s) -
Garde M. J.,
Sebastian J. L.,
Pintado J. Martin,
Gallego J. D.
Publication year - 1992
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650050915
Subject(s) - spectrometer , bandwidth (computing) , optics , physics , tangent , simplicity , sky , resolution (logic) , computer science , telecommunications , mathematics , geometry , astrophysics , quantum mechanics , artificial intelligence
A compact (900 × 100 × 120 mm) acousto‐optical spectrometer (AOS) of 60‐MHz bandwidth and effective resolution of 100 kHz has been designed with a minimum number of components and simplicity as design criteria. The spectrometer allows for integration times of several minutes during source‐on and sky‐off phases. The TeO 2 deflector does not use the usual tangent interaction outside the (110) axis, but a two‐band interaction known as quasitangent that leads to a greater bandwidth. The AOS is being used with the 14‐m antenna at the Centro Astronomico de Yebes facility, providing excellent results. © 1992 John Wiley & Sons, Inc.