Calibration of an echelle spectrograph with an astro-comb: a laser frequency comb with very high repetition rate
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Searches for extrasolar planets using precision radial velocity (PRV) techniques are approaching Earth-like planet sensitivity, however require an improvement of one order of magnitude to identify earth-mass planets in the habitable zone of sun-like stars. A key limitation is spectrograph calibration. An astro-comb, an octave-spanning laser frequency comb and a Fabry-Pérot cavity, producing evenly spaced frequencies with large wavelength coverage, is a promising tool for improved wavelength calibration. We demonstrate the calibration of a high-resolution astrophysical spectrograph below the 1 m/s level in the 8000-9000 Å and 4200 Å spectral bands. © (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Date issued
2012-09Department
Lincoln Laboratory; Massachusetts Institute of Technology. Research Laboratory of ElectronicsJournal
Proceedings of SPIE--the International Society for Optical Engineering
Publisher
SPIE
Citation
Phillips, David F., Alex Glenday, Chih-Hao Li, Gabor Furesz, Andrew J. Benedick, Guoqing N. Chang, Li-Jin Chen, et al. “Calibration of an Echelle Spectrograph with an Astro-Comb: a Laser Frequency Comb with Very High Repetition Rate.” Edited by Ian S. McLean, Suzanne K. Ramsay, and Hideki Takami. Ground-Based and Airborne Instrumentation for Astronomy IV (September 24, 2012). (Proceedings of SPIE; volume 8446). 84468O-1. © 2012 SPIE.
Version: Final published version
ISBN
9780819491473
ISSN
0277-786X