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Proceedings Paper

Achieving a few cm/sec calibration repeatability for high resolution spectrographs: the laser frequency comb on HARPS
Author(s): Gaspare Lo Curto; Antonio Manescau; Gerardo Avila; Luca Pasquini; Tobias Wilken; Tilo Steinmetz; Ronald Holzwarth; Rafael Probst; Thomas Udem; Theodor W. Hänsch; Jonay I. González Hernández; Massimiliano Esposito; Rafael Rebolo; Bruno Canto Martins; Jose Renan de Medeiros
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Paper Abstract

The laser frequency comb, with its extreme precision, opens a new window for high precision spectroscopy for current facilities, as well as for the ELT's. We report on the latest performance of the laser frequency comb obtained in combination with the HARPS spectrograph, which allowed calibration with cm/sec repeatability. The laser frequency comb system developed is described. Details of its laboratory set-up, characterization and integration with HARPS are shown. The results of the recent test campaigns are presented, showing excellent performance in terms of repeatability as well as wavelength coverage. Preliminary on sky data and next activities to integrate such a system in HARPS are presented.

Paper Details

Date Published: 24 September 2012
PDF: 10 pages
Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84461W (24 September 2012); doi: 10.1117/12.925964
Show Author Affiliations
Gaspare Lo Curto, European Southern Observatory (Germany)
Antonio Manescau, European Southern Observatory (Germany)
Gerardo Avila, European Southern Observatory (Germany)
Luca Pasquini, European Southern Observatory (Germany)
Tobias Wilken, Max-Planck-Institut für Quantenoptik (Germany)
Menlo Systems GmbH (Germany)
Tilo Steinmetz, Max-Planck-Institut für Quantenoptik (Germany)
Menlo Systems GmbH (Germany)
Ronald Holzwarth, Max-Planck-Institut für Quantenoptik (Germany)
Menlo Systems GmbH (Germany)
Rafael Probst, Max-Planck-Institut für Quantenoptik (Germany)
Thomas Udem, Max-Planck-Institut für Quantenoptik (Germany)
Theodor W. Hänsch, Max-Planck-Institut für Quantenoptik (Germany)
Jonay I. González Hernández, Instituto de Astrofísica de Canarias (Spain)
Massimiliano Esposito, Instituto de Astrofísica de Canarias (Spain)
Rafael Rebolo, Instituto de Astrofísica de Canarias (Spain)
Bruno Canto Martins, Univ. Federal do Rio Grande de Norte (Brazil)
Jose Renan de Medeiros, Univ. Federal do Rio Grande de Norte (Brazil)


Published in SPIE Proceedings Vol. 8446:
Ground-based and Airborne Instrumentation for Astronomy IV
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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