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Proceedings Paper

Development of Monolithic Michelson Interferometer for RV measurement in IR
Author(s): Ji Wang; Xiaoke Wan; Jian C. Ge
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Paper Abstract

We present a fixed delay interferometer to be installed in IR-ET (Infra-Red Exoplanets Tracker). We introduce the design, fabrication and testing processes. In particular, we present a new methodology of computing the fundamental limit of radial velocity (RV) measurement given by photon noise for DFDI (Dispersed Fixed Delay Interferometer) method as opposed to conventional echelle method. The new method is later used to determine the optical path difference (OPD) of the IR-ET interferometer. In addition, we introduce a novel method of monitoring the stability of the interferometer for IR-ET in broad-band using fourier-transform white-light scanning interferometry technique. The new method can be potentially expanded and applied to thermo-optic effect measurement if temperature control system is introduced into the experiment. The thermal response of the optical system is 3500 m/s/°C. We find that the RV calibration precision of 'Bracketing' method is 1.74 m/s without temperature control.

Paper Details

Date Published: 21 July 2010
PDF: 11 pages
Proc. SPIE 7734, Optical and Infrared Interferometry II, 77343Q (21 July 2010); doi: 10.1117/12.857255
Show Author Affiliations
Ji Wang, Univ. of Florida (United States)
Xiaoke Wan, Univ. of Florida (United States)
Jian C. Ge, Univ. of Florida (United States)

Published in SPIE Proceedings Vol. 7734:
Optical and Infrared Interferometry II
William C. Danchi; Françoise Delplancke; Jayadev K. Rajagopal, Editor(s)

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