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Development of a New, Precise Near-infrared Doppler Wavelength Reference: A Fiber Fabry-Perot Interferometer



Samuel Halverson, Suvrath Mahadevan, Lawrence W. Ramsey, Stephen L. Redman, Gillian Nave, John C. Wilson , Fred Hearty, Jon Holtzman


We present the ongoing development of a commercially available Micron Optics ber-Fabry Perot Interferometer as a precise, stable, easy to use, and economic spectrograph reference with the goal of achieving 1 m s..1 long term stability. Fiber Fabry-Perot interferometers (FFP) create interference patterns by combining light traversing di erent delay paths. The interference creates a rich spectrum of narrow emission lines, ideal for use as a precise Doppler reference. This fully photonic reference could easily be installed in existing NIR spectrographs, turning high resolution ber-fed spectrographs into precise Doppler velocimeters. First light results on the Sloan Digital Sky Survey III (SDSS-III) Apache Point Observatory Galactic Evolution Experiment (APOGEE)spectrograph and several tests of major support instruments are also presented. These instruments include a SuperK Photonics ber supercontinuum laser source and precise temperature controller. A high resolution spectrum obtained using the NIST 2-m Fourier transform spectrometer (FTS) is also presented. We nd our current temperature control precision of the FFP to be 0.15 mK, corresponding to a theoretical velocity stability of 35 cm s..1 due to temperature variations alone.
Proceedings Title
Proceedings of SPIE
Conference Dates
July 1-6, 2012
Conference Location
Amsterdam, NL
Conference Title
SPIE Astronomical Telescopes and Instrumentation


near-infrared spectrograph design, wavelength references, exoplanets, radial velocity surveys


Halverson, S. , Mahadevan, S. , Ramsey, L. , Redman, S. , Nave, G. , Wilson, J. , Hearty, F. and Holtzman, J. (2013), Development of a New, Precise Near-infrared Doppler Wavelength Reference: A Fiber Fabry-Perot Interferometer, Proceedings of SPIE, Amsterdam, NL, [online], (Accessed April 20, 2024)
Created January 31, 2013, Updated October 12, 2021