Work

Green astro-comb for HARPS-N

Year: 2012

Type: conference-paper

Abstract: Searches for Earth-like exoplanets using the stellar radial velocity measurements require accuracy <10 cm/s over years. To achieve such high accuracy requires a wavelength reference that provides many calibration lines with fractional frequency accuracy of 10-10 in the visible spectral range. We have developed a green astro-comb that generates ~6000 lines equally spaced by ~0.15 Å over 1000-Å bandwidth (centered at 5500 Å). The frequency of each line is directly locked to a frequency standard with fractional accuracy of 10-12 over decades. We plan to bring this green astro-comb to the HARPS-north spectrograph at the TNG telescope for tests in 2012.

Source: Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

DOI: 10.1117/12.925799

Authors: Chih-Hao Li, Alexander G. Glenday, David F. Phillips, Gabor Furesz, Nicholas Langellier, Matthew Webber, Alexander Zibrov, Andrew J. Benedick, Guoqing Chang, Li-Jin Chen, Dimitar Sasselov, Franz Kärtner, Andrew Szentgyorgyi, Ronald L. Walsworth

Institutions: Smithsonian Astrophysical Observatory, Center for Astrophysics Harvard & Smithsonian, Harvard University, Northeastern University, Massachusetts Institute of Technology

Language: English

Topic: Astronomy and Astrophysical Research

Subfield: Instrumentation

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W4229738958

FWCI: 1.794

Cites:

Cited by: 8

Related to: 10