| 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. |
| Citation: |
Optics Express |
| Volume: |
20 |
| Issue: |
6 |
| Pages: |
pp. 6631 - 6643 |
| Keywords: |
Astronomy and astrophysics;Infrared Spectroscopy;Laser frequency combs;Ultrafast nonlinear optics |
| Research Areas: |
Physics |
