OPTIMIZATION OF THE TOTAL BANDWIDTH OF THE MODULATOR DEFLECTOR OF AN ACOUSTOOPTICAL SPECTRUM ANALYZER USED IN RADIO-ASTRONOMY APPLICATIONS

Authors
GARDE MJ SEBASTIAN JL BENITO D ARAMBURU C
Citation
Mj. Garde et al., OPTIMIZATION OF THE TOTAL BANDWIDTH OF THE MODULATOR DEFLECTOR OF AN ACOUSTOOPTICAL SPECTRUM ANALYZER USED IN RADIO-ASTRONOMY APPLICATIONS, Microwave and optical technology letters, 7(18), 1994, pp. 823-827
Citations number
NO
Categorie Soggetti
Optics,"Engineering, Eletrical & Electronic
Journal title
Microwave and optical technology letters → ACNP
ISSN journal
08952477
Volume
7
Issue
18
Year of publication
1994
Pages
823 - 827
Database
ISI
SICI code
0895-2477(1994)7:18<823:OOTTBO>2.0.ZU;2-S
Abstract
The acoustic and the Bragg bandwidths can be optimized by using a modi fied mass electrode for the TeO2 crystal and a quasitangent interactio n instead of the classical tangent interaction, respectively. These op timizations lead to a 40% increase of the total bandwidth of the modul ator/deflector. Therefore, a higher value of the - 3-dB-bandwidth-spec tral-resolution ratio N is obtained. This allows us to study both wide r spectral lines (up to 90 MHz) and lines separated no more than 90 MH z, which means saving costly real observation time. (C) 1994 John Wile y & Sons, Inc.