Abstract
We present the first fully-stabilized optical frequency comb with GHz repetition rate from a diode-pumped solid-state laser emitting at 1 μm. The carrier-envelope offset (CEO) frequency f CEO is tightly locked by fast feedback to the current of the pump diode with a bandwidth of ∼150 kHz achieved using a home-built modulation electronics. We present a detailed noise analysis of an optical comb line and compare it to the separately measured noise of the repetition rate f rep and CEO beat to identify their respective contribution. The assessed comb mode linewidth is ∼780 kHz (at 1-s observation time), dominated by the residual noise of f rep .
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