87Rb-stabilized 375-MHz Yb:fiber femtosecond frequency comb

Thomas C. Schratwieser, Karolis Balskus, Richard A. McCracken, Carl Farrell, Christopher G. Leburn, Zhaowei Zhang, Tobias P. Lamour, Teresa I. Ferreiro, Alireza Marandi, Aidan Arnold, Derryck T. Reid

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We report a fully stabilized 1030-nm Yb-fiber frequency comb operating at a pulse repetition frequency of 375 MHz. The comb spacing was referenced to a Rb-stabilized microwave synthesizer and the comb offset was stabilized by generating a super-continuum containing a coherent component at 780.2 nm which was heterodyned with a 87Rb-stabilized external cavity diode laser to produce a radio-frequency beat used to actuate the carrier-envelope offset frequency of the Yb-fiber laser. The two-sample frequency deviation of the locked comb was 235 kHz for an averaging time of 50 seconds, and the comb remained locked for over 60 minutes with a root mean squared deviation of 236 kHz.

Original languageEnglish
Pages (from-to)10494-10499
Number of pages6
JournalOptics Express
Issue number9
Early online date26 Apr 2014
Publication statusPublished - 5 May 2014


  • Yb-fiber frequency comb
  • cavity diode laser
  • Rb-stabilized microwave synthesizer


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