2014
DOI: 10.1051/0004-6361/201424099
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A laser-lock concept to reach cm s-1-precision in Doppler experiments with Fabry-Pérot wavelength calibrators

Abstract: State-of-the-art Doppler experiments require wavelength calibration with precision at the cm s −1 level. A low-finesse Fabry-Pérot interferometer (FPI) can provide a wavelength comb with a very large bandwidth as required for astronomical experiments, but unavoidable spectral drifts are difficult to control. Instead of actively controlling the FPI cavity, we propose to passively stabilize the interferometer and track the time-dependent cavity length drift externally using the 87 Rb D 2 atomic line. A dual-fine… Show more

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Cited by 29 publications
(25 citation statements)
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“…However, the systems need to be referenced to LFCs, lamps or atomic features (Bauer et al 2015;McCracken et al 2014;Reiners et al 2014;Schwab et al 2015;Halverson et al 2014). Precise vacuum and temperature controls are generally required to stabilize the devices and it is important to track and correct for drifts in the dispersion.…”
Section: Fabry-pérot Interferometersmentioning
confidence: 99%
“…However, the systems need to be referenced to LFCs, lamps or atomic features (Bauer et al 2015;McCracken et al 2014;Reiners et al 2014;Schwab et al 2015;Halverson et al 2014). Precise vacuum and temperature controls are generally required to stabilize the devices and it is important to track and correct for drifts in the dispersion.…”
Section: Fabry-pérot Interferometersmentioning
confidence: 99%
“…The japanese IRD will use a laser frequency comb approach exclusively (Kotani et al 2014). The development of precise wavelength calibrators is an active line of research, and significant improvement has been made over the past few years (e.g., Wildi et al 2012;Reiners et al 2014).…”
Section: Assumptions and Limitations Of The Simulationsmentioning
confidence: 99%
“…7(a)-(g), we simulate the case in which the FFP cavity length is locked at one wavelength, e.g., to an optical frequency reference as in [23,24,26], with the expectation that frequency stabilizing one mode would stabilize all FFP modes. The precision with which the out-of-loop modes are stabilizedparticularly those far from the stabilizing frequency -remains an outstanding question in the field.…”
Section: Simulated Frequency Lock Of the Ffpmentioning
confidence: 99%
“…A passive Fabry-Pérot (FP) etalon has also been suggested as an astronomical wavelength calibration source for high precision Doppler measurements [21][22][23]. When illuminated by a broadband light source, the transmission of an etalon consists of a broad array of comb-like spectral features.…”
Section: Introductionmentioning
confidence: 99%