Stabilizing a fabry–perot etalon peak to 3 cm s1 for spectrograph calibration

C. Schwab, J. Stürmer, Y. V. Gurevich, T. Führer, S. K. Lamoreaux, T. Walther, A. Quirrenbach

Research output: Contribution to journalArticleResearchpeer-review

Abstract

We present a method of frequency stabilizing a broadband etalon that can serve as a high-precision wavelength calibrator for an echelle spectrograph. Using a laser to probe the Doppler-free saturated absorption of the rubidium D2 line, we stabilize one etalon transmission peak directly to the rubidium frequency. The rubidium transition is an established frequency standard and has been used to lock lasers to fractional stabilities of <1012, a level of accuracy far exceeding the demands of radial velocity (RV) searches for exoplanets. The stabilized bandwidth depends on the dispersion characteristics of the etalon. We describe a simple setup designed specifically for use at an observatory and demonstrate that we can stabilize the etalon peak to a relative precision of <1010; this is equivalent to 3 cm s1 RV precision.

LanguageEnglish
Pages880-889
Number of pages10
JournalPublications of the Astronomical Society of the Pacific
Volume127
Issue number955
DOIs
Publication statusPublished - 1 Sep 2015

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rubidium
spectrographs
calibration
radial velocity
laser
frequency standards
extrasolar planets
lasers
observatories
observatory
probe
broadband
wavelength
bandwidth
probes
wavelengths

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Schwab, C., Stürmer, J., Gurevich, Y. V., Führer, T., Lamoreaux, S. K., Walther, T., & Quirrenbach, A. (2015). Stabilizing a fabry–perot etalon peak to 3 cm s1 for spectrograph calibration. Publications of the Astronomical Society of the Pacific, 127(955), 880-889. https://doi.org/10.1086/682879
Schwab, C. ; Stürmer, J. ; Gurevich, Y. V. ; Führer, T. ; Lamoreaux, S. K. ; Walther, T. ; Quirrenbach, A. / Stabilizing a fabry–perot etalon peak to 3 cm s1 for spectrograph calibration. In: Publications of the Astronomical Society of the Pacific. 2015 ; Vol. 127, No. 955. pp. 880-889.
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abstract = "We present a method of frequency stabilizing a broadband etalon that can serve as a high-precision wavelength calibrator for an echelle spectrograph. Using a laser to probe the Doppler-free saturated absorption of the rubidium D2 line, we stabilize one etalon transmission peak directly to the rubidium frequency. The rubidium transition is an established frequency standard and has been used to lock lasers to fractional stabilities of <10–12, a level of accuracy far exceeding the demands of radial velocity (RV) searches for exoplanets. The stabilized bandwidth depends on the dispersion characteristics of the etalon. We describe a simple setup designed specifically for use at an observatory and demonstrate that we can stabilize the etalon peak to a relative precision of <10–10; this is equivalent to 3 cm s–1 RV precision.",
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Schwab, C, Stürmer, J, Gurevich, YV, Führer, T, Lamoreaux, SK, Walther, T & Quirrenbach, A 2015, 'Stabilizing a fabry–perot etalon peak to 3 cm s1 for spectrograph calibration', Publications of the Astronomical Society of the Pacific, vol. 127, no. 955, pp. 880-889. https://doi.org/10.1086/682879

Stabilizing a fabry–perot etalon peak to 3 cm s1 for spectrograph calibration. / Schwab, C.; Stürmer, J.; Gurevich, Y. V.; Führer, T.; Lamoreaux, S. K.; Walther, T.; Quirrenbach, A.

In: Publications of the Astronomical Society of the Pacific, Vol. 127, No. 955, 01.09.2015, p. 880-889.

Research output: Contribution to journalArticleResearchpeer-review

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