A Cesium optical atomic clock with high optical frequency stability

Kazunari Tokuhira, Fumitaka Suzuki, Masato Yoshida, Masataka Nakazawa

Research output: Contribution to journalLetterpeer-review

3 Citations (Scopus)


We describe the greatly improved performance of a 1.5 μm optical frequency stabilized Cs atomic clock composed of a mode-hopfree mode-locked fiber laser and an acetylene optical frequency standard. The output pulse width was shortened from 7.1 to 3.4 ps by employing a phase modulator instead of an intensity modulator as a mode-locker. The optical frequency stability for an averaging time of 100 s was also improved from 1.8 × 10 -11 to 6.3 × 10 -12 by precisely controlling the laser cavity temperature.

Original languageEnglish
Pages (from-to)1496-1503
Number of pages8
JournalIEICE Electronics Express
Issue number18
Publication statusPublished - 2012


  • Cs optical atomic
  • Optical frequency stabilization
  • Short pulse


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