Fizeau interferometry testbed: wavefront control

Lyon, Richard G.; Carpenter, Kenneth G.; Mazzuca, Lisa M.; Huet, Hubert; Cottle, P.; Petrone, Peter; Dagoda, Peter; Liiva, Peter; Marzouk, Joe; Solyar, Gregory; Mozurkewich, David; Zhang, Xiaolei; Armstrong, T. P.

doi:10.1117/12.552198

Cited by 4 publications

(1 citation statement)

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“…Initial phase retrieval results show an RMS wavefront error of ~λ/4 ± λ/28 over all seven apertures. The maximum and minimum wavefront errors measured on a single aperture were ~λ/10 ± λ/31 and ~λ/20 ± λ/32 respectively [5]. These numbers represent "first light" results that incorporate a number of error sources that are easily controlled.…”

Section: White Light Interferometrymentioning

confidence: 99%

Fabrication and characterization of the Fizeau interferometer testbed

Petrone

Carpenter

Clark

et al. 2004

New Frontiers in Stellar Interferometry

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The Fizeau Interferometer Testbed (FIT) is a ground-based system that will be used for the development and testing of technologies relevant to Stellar Imager (SI) and other sparse aperture/Fizeau imaging interferometer mission concepts. The testbed will utilize image-based wavefront sensing and control to co-phase and maintain closed-loop control over a Sparse Aperture Array (SAA) consisting of spherical mirror elements. The SAA is a re-configurable assembly baselined to incorporate between seven (initially) and thirty 12.5mm diameter (R = 4000mm) mirror elements. In this paper we describe the fabrication, alignment, and initial calibration of the phase I (7 primary elements) FIT hardware and discuss various factors impacting the performance and stability of the testbed.

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Section: White Light Interferometrymentioning

confidence: 99%