A wide band acousto-optical spectrometer based in a quasi-tangent interaction modulator

Author

Garde, Maria J ; Sebastian, J.L. ; Benito, D. ; Aramburu, C.

Author_Institution

Dpto. Automatica y Electronica, Univ. Publica de Navarra, Pamplona, Spain

fYear

1993

fDate

15-18 Nov 1993

Firstpage

91

Lastpage

92

Abstract

This paper describes an acousto-optical spectrometer based on a light modulator-deflector that does not use the usual tangent interaction, but a two-band interaction that increases the bandwidth by a factor of (2)^1/2 with 3 dB at the center and edges of the frequency bandwidth. The greater bandwidth makes a better bandwidth-frequency resolution ratio possible, so therefore the system is equally well suited for the resolution of both narrow and wide spectral lines studied in radio astronomy

Keywords

acousto-optical deflectors; acousto-optical modulation; spectrometers; spectroscopy; bandwidth-frequency resolution ratio; frequency bandwidth; light modulator-deflector; quasi-tangent interaction modulator; radio astronomy; spectral line resolution; two-band interaction; wide band acousto-optical spectrometer; Bandwidth; Charge coupled devices; Extraterrestrial measurements; Frequency; Optical attenuators; Spectroscopy; Stability; Time measurement; Velocity measurement; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society Annual Meeting, 1993. LEOS '93 Conference Proceedings. IEEE

Conference_Location

San Jose, CA

Print_ISBN

0-7803-1263-5

Type

conf

DOI

10.1109/LEOS.1993.379126

Filename

379126