http://arxiv.org/abs/1705.07192
Using a turn-key Ti:sapphire femtosecond laser frequency comb and an off-the-shelf supercontinuum device, we report the generation of a 16 GHz frequency comb spanning an 80 nm band about a center wavelength of 570 nm. The light from this turn-key astro-comb is used to calibrate the HARPS-N astrophysical spectrograph for precision radial velocity measurements. The comb-calibrated spectrograph achieves a stability of $\sim$ 1 cm/s within half an hour of averaging time. We also use the turn-key astro-comb to perform calibration of solar spectra obtained with a compact telescope, and to study intrapixel sensitivity variations on the CCD of the spectrograph.
A. Ravi, D. Phillips, M. Beck, et. al.
Tue, 23 May 17
6/68
Comments: 7 pages, 7 figures, submitted to Optics Express (astrophotonics feature issue)
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