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|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;|
|Title:||Demonstration of on-sky calibration of astronomical spectra using a 20 GHz near-IR laser frequency comb|
|Published:||March 06, 2012|
|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.|
|Pages:||pp. 6631 - 6643|
|Keywords:||Astronomy and astrophysics,Infrared Spectroscopy,Laser frequency combs,Ultrafast nonlinear optics|
|PDF version:||Click here to retrieve PDF version of paper (1MB)|