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.
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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