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The conversion of optical signals into electronic signals is the major bottleneck in transfer of timing stability. Excess phase noise and drift in the photodetection processes limits the achievable microwave signal quality. We report on the microwave signal synthesis from mode-locked lasers using a new type of an optoelectronic phase-locked loop (PLL). This PLL is based on the phase detection between...
Optical pulse trains from mode-locked lasers carry ultra-low-jitter optical and microwave signals. High-precision transfer of optical pulse trains to remote locations can result in large-scale synchronization of multiple ultrafast lasers and rf-systems. We report on the achievement of long-term (>10 hours) sub-10 fs accuracy in timing transfer as well as optical-to-microwave and optical-to-optical...
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