Computer Science – Performance
Scientific paper
Jul 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3350..985g&link_type=abstract
Proc. SPIE Vol. 3350, p. 985-993, Astronomical Interferometry, Robert D. Reasenberg; Ed.
Computer Science
Performance
Scientific paper
Heterodyne interferometer laser gauges are used in space- based astronomical interferometers to very accurately measure and compensate for variations in starlight pathlength. Bragg cells have been traditionally used to generate the heterodyne signal by shifting the frequency of the laser light. This paper presents the development and qualification of an integrated optic frequency shifter (IOFS) which offers improved performance and reliability compared with Bragg cell technology. The most critical advantage of the IOFS for space applications is that it enables fiber optic metrology source integration, which facilitates the integration process and result in more reliable and compact heterodyne interferometer laser gauges.
Dubovitsky Serge
Fritz Daniel J.
Gutierrez Roman C.
Kissa Karl M.
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