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Demonstration of on-sky calibration of astronomical spectra using a 20 GHz near-IR laser frequency comb

Published

Author(s)

Gabriel G. Ycas, Franklyn J. Quinlan, Scott A. Diddams, Steve Osterman, Chad F. Bender, Brandon Botzer, Lawrence W. Ramsey, Ryan Terrien, Suvrath Mahadevan, Stephen L. Redman

Abstract

We describe and characterize a 25 GHz laser frequency comb based on a cavity-filtered erbium fiber mode-locked laser that provides a uniform array of optical frequencies stabilized using the GPS-system atomic clocks spanning 1475–1625 nm. This comb was transported to the Hobby-Eberly telescope at the McDonald observatory where it was used to calibrate the Pathfinder near-infrared spectrograph. Stellar targets were observed in 3 echelle orders over 4 nights.
Citation
Optics Express
Volume
20
Issue
6

Keywords

Astronomy and astrophysics, Infrared Spectroscopy, Laser frequency combs, Ultrafast nonlinear optics

Citation

Ycas, G. , Quinlan, F. , Diddams, S. , Osterman, S. , Bender, C. , Botzer, B. , Ramsey, L. , Terrien, R. , Mahadevan, S. and Redman, S. (2012), Demonstration of on-sky calibration of astronomical spectra using a 20 GHz near-IR laser frequency comb, Optics Express, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=910016 (Accessed March 4, 2024)
Created March 6, 2012, Updated February 19, 2017