High-precision spectroscopy with counterpropagating femtosecond pulses.

نویسندگان

  • Itan Barmes
  • Stefan Witte
  • Kjeld S E Eikema
چکیده

An experimental realization of high-precision direct frequency comb spectroscopy using counterpropagating femtosecond pulses on two-photon atomic transitions is presented. The Doppler broadened background signal, hampering precision spectroscopy with ultrashort pulses, is effectively eliminated with a simple pulse shaping method. As a result, all four 5S-7S two-photon transitions in a rubidium vapor are determined with both statistical and systematic uncertainties below 10(-11), which is an order of magnitude better than previous experiments on these transitions.

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عنوان ژورنال:
  • Physical review letters

دوره 111 2  شماره 

صفحات  -

تاریخ انتشار 2013