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An alternative to the sub-100 MHz repetition rate laser source is explored. A low noise SCOWA-based harmonically mode-locked laser is developed and temporally demultiplexed to twice the cavity fundamental resulting in a 40 MHz pulse train.
We built an ultra stable coupled optoelectronic oscillator using a slab coupled optical waveguide amplifier, generating pulses at 10.24 GHz with a repetition rate drift of only 513 Hz in 10 minutes without active stabilization.
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