In-situ determination of astro-comb calibrator lines to better than \(\textrm{10 cm s}^{-1}\)

DSpace/Manakin Repository

In-situ determination of astro-comb calibrator lines to better than \(\textrm{10 cm s}^{-1}\)

Citable link to this page

. . . . . .

Title: In-situ determination of astro-comb calibrator lines to better than \(\textrm{10 cm s}^{-1}\)
Author: Li, Chih-Hao; Glenday, Alexander G.; Benedick, Andrew J.; Chang, Guoqing; Chen, Li-Jin; Cramer, Claire; Fendel, Peter; Furesz, Gabor; Kärtner, Franz X.; Korzennik, Sylvain G.; Phillips, David M.; Sasselov, Dimitar D.; Szentgyorgyi, Andrew H.; Walsworth, Ronald L.

Note: Order does not necessarily reflect citation order of authors.

Citation: Li, Chih-Hao, Alexander G. Glenday, Andrew J. Benedick, Guoqing Chang, Li-Jin Chen, Claire Cramer, Peter Fendel, et al. 2010. In-situ determination of astro-comb calibrator lines to better than \(\textrm{10 cm s}^{-1}\). Optics Express 18(12): 13239–13249.
Full Text & Related Files:
Abstract: Improved wavelength calibrators for high-resolution astrophysical spectrographs will be essential for precision radial velocity (RV) detection of Earth-like exoplanets and direct observation of cosmological deceleration. The astro-comb is a combination of an octave-spanning femtosecond laser frequency comb and a Fabry-Pérot cavity used to achieve calibrator line spacings that can be resolved by an astrophysical spectrograph. Systematic spectral shifts associated with the cavity can be 0.1-1 MHz, corresponding to RV errors of 10-100 cm/s, due to the dispersive properties of the cavity mirrors over broad spectral widths. Although these systematic shifts are very stable, their correction is crucial to high accuracy astrophysical spectroscopy. Here, we demonstrate an in-situ technique to determine the systematic shifts of astro-comb lines due to finite Fabry-Pérot cavity dispersion. The technique is practical for implementation at a telescope-based spectrograph to enable wavelength calibration accuracy better than 10 cm/s.
Published Version: doi:10.1364/OE.18.013239
Other Sources: http://walsworth.physics.harvard.edu/publications/2010_Li_OptExp.pdf
http://arxiv.org/abs/1006.0492
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:9367005

Show full Dublin Core record

This item appears in the following Collection(s)

  • FAS Scholarly Articles [7374]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
 
 

Search DASH


Advanced Search
 
 

Submitters