17 November 2017 Astro-comb calibrator and spectrograph characterization using a turn-key laser frequency comb
Author Affiliations +
Abstract
Using a turn-key Ti:sapphire femtosecond laser frequency comb, an off-the-shelf supercontinuum device and Fabry-Perot mode filters, we report the generation of a 16-GHz frequency comb spanning a 90-nm band about a center wavelength of 566 nm. The light from this astro-comb is used to calibrate the HARPS-N astrophysical spectrograph for precision radial velocity measurements. The comb-calibrated spectrograph achieves a stability of 1    cm / s within half an hour of averaging time. We also use the astro-comb as a reference for measurements of solar spectra obtained with a compact telescope and as a tool to study intrapixel sensitivity variations on the spectrograph detector.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Aakash Ravi, David F. Phillips, Matthias Beck, Leopoldo L. Martin, Massimo Cecconi, Adriano Ghedina, Emilio Molinari, Albrecht Bartels, Dimitar Sasselov, Andrew Szentgyorgyi, Ronald L. Walsworth, "Astro-comb calibrator and spectrograph characterization using a turn-key laser frequency comb," Journal of Astronomical Telescopes, Instruments, and Systems 3(4), 045003 (17 November 2017). https://doi.org/10.1117/1.JATIS.3.4.045003 . Submission: Received: 1 July 2017; Accepted: 1 November 2017
Received: 1 July 2017; Accepted: 1 November 2017; Published: 17 November 2017
JOURNAL ARTICLE
5 PAGES


SHARE
RELATED CONTENT


Back to Top