Fig. 3: Performance of the wavemeter.
From: An integrated wavemeter based on fully-stabilized resonant electro-optic frequency comb
a The Allan deviation of the repetition rate of the EO comb. The frequency stability of the repetition rate reaches 0.4 Hz at 1 s of measurement time. b The Allan deviation of the pump laser frequency for unlocked (hollow green circles) and locked state (solid blue circles). At a measurement time of 1 s, the frequency stability is improved from 30 kHz to 0.9 kHz. The Allan deviation of one comb line (μ = 50) (hollow red circles) and the ULE cavity-referenced laser (hollow black circles). At a measurement time of 1 s, the frequency stability of the locked comb line reaches 0.9 kHz, and the stability reaches 0.2 kHz at 512 s of measurement time, indicating a sub-kHz-level frequency measurement precision. Error bars represent a 68% confidence interval.
