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Proceedings Paper

Single-lock: a stable Fabry-Perot based wavelength calibrator
Author(s): T. M. McCracken; C. A. Jurgenson; D. A. Fischer; R. A. Stoll; A. E. Szymkowiak; J. Bradford; W. Rutter
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Paper Abstract

Pushing the RV technique to the precision required to detect Earth-like planets around Solar-type stars requires extreme stability in the wavelength calibrator. We are developing a wavelength calibration technique based on a Fabry-Perot interferometer locked to a stabilized laser. This approach offers advantages over other methods: it produces a broadband, emission comb output from 380-790 nm that is difficult to achieve with a laser frequency comb; by injecting into the science fibers before and after observations, weak signals from velocities in the stellar photosphere that would be masked by iodine reference lines can be now be identified; and by locking the laser to an atomic transition, the spectrum will be stabilized to better than 1 part in 10 e-11, corresponding to a wavelength solution that is known to better than 1 cms-1.

Paper Details

Date Published: 8 July 2014
PDF: 9 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91473L (8 July 2014); doi: 10.1117/12.2056488
Show Author Affiliations
T. M. McCracken, Yale Univ. (United States)
C. A. Jurgenson, Yale Univ. (United States)
D. A. Fischer, Yale Univ. (United States)
R. A. Stoll, Yale Univ. (United States)
A. E. Szymkowiak, Yale Univ. (United States)
J. Bradford, Yale Univ. (United States)
W. Rutter, Massachusetts Institute of Technology (United States)

Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

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