SIM internal metrology beam launcher development

Feng Zhao; Rosemary Diaz; Gary M. Kuan; Norbert Sigrist; Yuri Beregovski; Lawrence L. Ames; Kalyan Dutta

doi:10.1117/12.460940

26 February 2003 SIM internal metrology beam launcher development

Feng Zhao, Rosemary Diaz, Gary M. Kuan, Norbert Sigrist, Yuri Beregovski, Lawrence L. Ames, Kalyan Dutta

Proceedings Volume 4852, Interferometry in Space; (2003) https://doi.org/10.1117/12.460940
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

To accomplish micro-arcsecond astrometric measurement, stellar interferometers such as SIM require the measurement of internal optical path length delay with an accuracy of ~10 picometers level. A novel common-path laser heterodyne interferometer suitable for this application was proposed and demonstrated at JPL. In this paper, we present some of the experimental results from a laboratory demonstration unit and design considerations for SIM's internal metrology beam launcher.

Citation Download Citation

Feng Zhao, Rosemary Diaz, Gary M. Kuan, Norbert Sigrist, Yuri Beregovski, Lawrence L. Ames, and Kalyan Dutta "SIM internal metrology beam launcher development", Proc. SPIE 4852, Interferometry in Space, (26 February 2003); https://doi.org/10.1117/12.460940

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