potential to be scaled to even higher repetition rates. Nanojoule femtosecond pulses are
produced at a GHz repetition rate, and used to generate over an octave of supercontinuum
spanning 1µm-2.4µm. Carrier-envelope offset … The fceo beat, along with the laser
repetition rate frep, are locked to stable microwave reference oscillators, yielding, to the best
of our knowledge, the first octave-spanning selfreferenced optical frequency comb centered …