Photon-trap spectroscopy of mass-selected ions in an ion trap: Optical absorption and magneto-optical effects

Akira Terasaki, Takuya Majima, Tamotsu Kondow

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A novel experimental technique has been developed to observe a trace of optical absorption of free mass-selected ions. The technique combines a linear radio-frequency ion trap with a high-finesse optical cavity to perform cavity ring-down spectroscopy (photon-trap spectroscopy for generality), where the storage lifetime of photons in the cavity provides a sensitivity high enough to probe the trapped ions. Absorption spectra of the manganese ion Mn+ are presented, showing hyperfine structures for the P 2,3,4 7 S37 transitions in the ultraviolet range. Implementation of a solenoidal magnet allows us to observe the Zeeman splitting and the Faraday rotation as well.

Original languageEnglish
Article number231101
JournalJournal of Chemical Physics
Issue number23
Publication statusPublished - Dec 1 2007
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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