Relative stability of two laser frequency combs for routine operation on HARPS and FOCES

Bibcode
2016SPIE.9908E..64P
DOI
10.1117/12.2231434
Probst, R. A.; Lo Curto, Gaspare; Ávila, Gerardo; Brucalassi, Anna; Canto Martins, Bruno L.; de Castro Leão, Izan; Esposito, M.; González Hernández, J. I.; Grupp, Frank; Hänsch, Theodor W.; Holzwarth, Ronald; Kellermann, Hanna; Kerber, Florian; Mandel, Olaf; Manescau, Antonio; Pasquini, Luca; Pozna, Eszter; Rebolo, R.; Renan de Medeiros, José; Stark, Sebastian P.; Steinmetz, Tilo; Suárez Mascareño, A.; Udem, Thomas; Urrutia, Josefina; Wu, Yuanjie
Bibliographical reference

Proceedings of the SPIE, Volume 9908, id. 990864 16 pp. (2016).

Advertised on:
8
2016
Number of authors
25
IAC number of authors
4
Citations
17
Refereed citations
16
Description
We report on the installation of a laser frequency comb (LFC) at the HARPS spectrograph, which we characterize relative to a second LFC that we had brought to HARPS for testing. This allowed us for the first time to probe the relative stability of two independent astronomical LFCs over an extended wavelength range. Both LFCs covered the spectral range of HARPS at least from 460 to 690 nm. After optimization of the fiber coupling to HARPS to suppress modal noise, a relative stability of the two LFCs in the low cm/s range was obtained. In combination with the results of our four earlier LFC test campaigns on HARPS, the available data now cover a time span of more than six years.
Type
Non-refereed

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