Status of the laser frequency comb for high precision calibration of ESPRESSO and HARPS

Antonio Ramon Manescau Hernandez; Gaspare Lo Curto; Oliver Pfuhl; Matias Jones; Elyar Sedaghati; Rodrigo Badinez; Pablo Burgos; Frederic Derie; Luca Pasquini; Norbert Hubin

doi:10.1117/12.3027510

19 July 2024 Status of the laser frequency comb for high precision calibration of ESPRESSO and HARPS

Antonio Ramon Manescau Hernandez, Gaspare Lo Curto, Oliver Pfuhl, Matias Jones, Elyar Sedaghati, Rodrigo Badinez, Pablo Burgos, Frederic Derie, Luca Pasquini, Norbert Hubin

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 1309640 (2024) https://doi.org/10.1117/12.3027510
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

Laser frequency combs (LFCs) are optical devices that produce a series of equally spaced spectral lines that can serve as precise and stable references for spectroscopic calibration. ESO has already since several years, laser frequency combs systems in routine operation for the HARPS and the ESPRESSO instruments. We discuss the challenges and solutions for maintaining and operating the LFCs for daily calibrations, and latest achieved performances are presented. Open issues are outlined as well.

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Antonio Ramon Manescau Hernandez, Gaspare Lo Curto, Oliver Pfuhl, Matias Jones, Elyar Sedaghati, Rodrigo Badinez, Pablo Burgos, Frederic Derie, Luca Pasquini, and Norbert Hubin "Status of the laser frequency comb for high precision calibration of ESPRESSO and HARPS", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 1309640 (19 July 2024); https://doi.org/10.1117/12.3027510

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