Scatterings
Taking Pulse Trains to Attosecond Precision
Femtosecond laser frequency combs have enabled many advances in metrology, from optical atomic clocks to the search for extrasolar planets.
Optical lasers can be used to synchronize free-electron lasers.
Greg Hren, MIT Research Laboratory of Electronics
Femtosecond laser frequency combs have enabled many advances in metrology, from optical atomic clocks to the search for extrasolar planets. Researchers at the Massachusetts Institute of Technology (MIT, U.S.A.) have figured out that these optical pulse trains are precise down to the attosecond (as) level (Nature Photon., doi:10.1038/nphoton.2011.326).
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