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An optical frequency comb for infrared spectrograph calibration



Gabriel G. Ycas, Franklyn J. Quinlan, Steve Osterman, Gillian Nave, Craig J. Sansonetti, Scott A. Diddams


Detection of extrasolar planets by measurement of the stellar radial velocity shift requires high resolution spectroscopy with long term stability. Presently, the primary wavelength standards in the NIR are NePt and ThAr lamps and absorption cells. These suffer from a combination of sparse spectral coverage, low intensity, and questionable long-term stability. As an alternative, we present a laser frequency comb uniformly covering the H band and a portion of the J band, with frequency precision better than 1e-11 and mode spacing suitable for a 50,000 resolution spectrograph.
Proceedings Title
Proc. 2010 SPIE Conf.
Conference Dates
June 27-July 2, 2010
Conference Location
San Diego, CA
Conference Title
SPIE Astronomical Instrumentation


astronomical instruments, astronomical spectra, astronomical techniques, calibration, infrared astronomy, spectrometers


Ycas, G. , Quinlan, F. , Osterman, S. , Nave, G. , Sansonetti, C. and Diddams, S. (2010), An optical frequency comb for infrared spectrograph calibration, Proc. 2010 SPIE Conf., San Diego, CA, [online], (Accessed April 25, 2024)
Created November 17, 2010, Updated February 19, 2017