Implementation of a tunable frequency comb improves calibration precision in astronomical spectrographs, indicating enhanced detection of Earth-analogs.
We demonstrate a dynamic frequency comb, which is tunable in both frequency and intensity, to characterize and calibrate an astronomical spectrograph. These capabilities are critical for achieving cm/s level radial velocity precision to detect Earth-analogs.
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Sekhar et al. (2025) studied this question.
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