Spontaneous noise spectroscopy of an atomic magnetic resonance

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42 Citations (Scopus)


We have experimentally demonstrated a new type of noise spectroscopy, which requires neither amplitude nor frequency noise of the light source. A highly stabilized diode laser provides low-noise light for the optical magnetic resonance of Rb atoms. The laser light transmitted through the Rb vapor contains significant intensity fluctuations whose power spectrum has a distinct peak at the Larmor frequency. The fluctuations are spontaneously generated by the atoms and are attributed to the stochastic properties of the photon scattering which randomly interrupts the Larmor precession of the atomic magnetic moment.

Original languageEnglish
Pages (from-to)5292-5295
Number of pages4
JournalPhysical review letters
Issue number23
Publication statusPublished - 2000

ASJC Scopus subject areas

  • General Physics and Astronomy


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