Integrated optic frequency shifters for space heterodyne interferometry

Roman C. Gutierrez; Serge Dubovitsky; Karl M. Kissa; Daniel J. Fritz

doi:10.1117/12.317167

24 July 1998 Integrated optic frequency shifters for space heterodyne interferometry

Roman C. Gutierrez, Serge Dubovitsky, Karl M. Kissa, Daniel J. Fritz

Proceedings Volume 3350, Astronomical Interferometry; (1998) https://doi.org/10.1117/12.317167
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

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.

Citation Download Citation

Roman C. Gutierrez, Serge Dubovitsky, Karl M. Kissa, and Daniel J. Fritz "Integrated optic frequency shifters for space heterodyne interferometry", Proc. SPIE 3350, Astronomical Interferometry, (24 July 1998); https://doi.org/10.1117/12.317167

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