@article{799,
  author = {Jun Ye and Steven Cundiff and S. Foreman and Tara Fortier and John Hall and K. Holman and D. Jones and J. Jost and Henry Kapteyn and K. Leeuwen and L.-S. Ma and Margaret Murnane and J.-L. Peng and R. Shelton},
  title = {Phase-coherent synthesis of optical frequencies and waveforms},
  abstract = {Precision phase control of an ultrawide-bandwidth optical-frequency comb has produced remarkable and unexpected progress in both areas of optical-frequency metrology and ultrafast optics. A frequency comb (with 100MHz spacing) spanning an entire optical octave (> 300 THz) has been produced, corresponding to millions of marks on a frequency “ruler” that are stable at the Hz level. The precision comb has been used to establish a simple optical clock based on an optical transition of iodine molecules, providing an rf clock signal with a frequency stability comparable to that of an optical standard, and which is superior to almost all conventional rf sources. To realize a high-power cw optical frequency synthesizer, a separate, widely tunable single-frequency cw laser has been employed to randomly access the stabilized optical comb and lock to any desired comb component. Carrier-envelope phase stabilization of few-cycle optical pulses has recently been realized. This advance in femtosecond technology is important for both extreme non-linear optics and optical-frequency metrology. With two independent femtosecond lasers, we have not only synchronized their relative pulse timing at the femtosecond level, but have also phase-locked their carrier frequencies, thus establishing phase coherence between the two lasers. By coherently stitching the optical bandwidth together, a “synthesized” pulse has been generated with its 2nd-order autocorrelation signal displaying a shorter width than those of the two “parent” lasers.},
  year = {2002},
  journal = {Applied Physics B: Lasers and Optics},
  volume = {74},
  pages = {s27 - s34},
  month = {2002-06},
  issn = {0946-2171},
  doi = {10.1007/s00340-002-0905-9},
}