Home > Publications database > Operation of a Broadband Visible-Wavelength Astro-Comb with a High-Resolution Astrophysical Spectrograph > print

001     208059
005     20250730112505.0
024 7 _ |a 10.1364/OPTICA.2.000250
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024 7 _ |a openalex:W2033653115
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037 _ _ |a PUBDB-2015-01536
041 _ _ |a English
082 _ _ |a 530
100 1 _ |a Glenday, Alexander G.
|0 P:(DE-HGF)0
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|e Corresponding Author
245 _ _ |a Operation of a Broadband Visible-Wavelength Astro-Comb with a High-Resolution Astrophysical Spectrograph
260 _ _ |a Washington, DC
|c 2015
|b OSA
336 7 _ |a Journal Article
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336 7 _ |a article
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336 7 _ |a Journal Article
|b journal
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336 7 _ |a ARTICLE
|2 BibTeX
520 _ _ |a Searches for Earth-like exoplanets using the periodic Doppler shift of stellar absorption lines require 10 cm∕s precision in the measurement of stellar radial velocity (RV) over timescales of years. Current techniques have led to the discovery of short-period exoplanets that induce RV wobbles as small as ≈1 m∕s on their parent stars. It has been suggested that order-of-magnitude improved RV precision may be achievable using an astro-comb, a laser frequency comb optimized for astrophysical spectrograph wavelength calibration. Here we report the development of a broadband visible-wavelength astro-comb and its operation with the HARPS-N spectrograph at the Telescopio Nazionale Galileo in the Canary Islands. This green astrocomb has >7000 narrow (<1 MHz) spectral lines spaced by 16 GHz with relatively uniform line power from 500 to 620 nm. The line frequencies are locked to GPS, enabling us to realize HARPS-N wavelength calibration with RV measurement precision and stability <10 cm∕s.
536 _ _ |a 6211 - Extreme States of Matter: From Cold Ions to Hot Plasmas (POF3-621)
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700 1 _ |a Li, Chih-Hao
|0 P:(DE-HGF)0
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700 1 _ |a Langellier, Nicholas
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700 1 _ |a Chang, Guoqing
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700 1 _ |a Chen, Li-Jin
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700 1 _ |a Furesz, Gabor
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700 1 _ |a Zibrov, Alexander A.
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700 1 _ |a Kaertner, Franz
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700 1 _ |a Phillips, David F.
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700 1 _ |a Sasselov, Dimitar
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700 1 _ |a Szentgyorgyi, Andrew
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700 1 _ |a Walsworth, Ronald L.
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773 _ _ |a 10.1364/OPTICA.2.000250
|g Vol. 2, no. 3, p. 250 -
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|p 250 - 254
|t Optica
|v 2
|y 2015
|x 2334-2536
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914 1 _ |y 2015
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