17 November 2017 Astro-comb calibrator and spectrograph characterization using a turn-key laser frequency comb
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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, Aakash Ravi, David F. Phillips, David F. Phillips, Matthias Beck, Matthias Beck, Leopoldo L. Martin, Leopoldo L. Martin, Massimo Cecconi, Massimo Cecconi, Adriano Ghedina, Adriano Ghedina, Emilio Molinari, Emilio Molinari, Albrecht Bartels, Albrecht Bartels, Dimitar Sasselov, Dimitar Sasselov, Andrew Szentgyorgyi, Andrew Szentgyorgyi, Ronald L. Walsworth, 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
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