Figure 1
From: Synchronous multi-color laser network with daily sub-femtosecond timing drift
Layout of a synchronous mode-locked laser network with sub-femtosecond daily drift. Temporal duration and periodicity of the red and green pulses are not to scale with the time axes. The time axes under the pulses are in logarithmic scale, whereas the time axes in the middle are in linear scale on the order of femtoseconds. Orange filled circles symbolize timing detectors (TD).
