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Optical frequency comb with an absolute linewidth of 0.6 Hz-1.2 Hz over an octave spectrum

  • Su Fang
  • , Haiqin Chen
  • , Tianyin Wang
  • , Yanyi Jiang*
  • , Zhiyi Bi
  • , Longsheng Ma
  • *Corresponding author for this work
  • East China Normal University

Research output: Contribution to journal › Article › peer-review

Abstract

We demonstrate a narrow-linewidth optical frequency comb based on a femtosecond Ti:sapphire laser by precisely phase-locking it to a subhertz-linewidth Nd:YAG laser at 1064 nm. Each comb tooth inherits the phase coherence and frequency stability of the subhertz-linewidth laser. By comparing against other independent narrow-linewidth lasers, we measured the absolute linewidth of the comb teeth to be 0.6 Hz-1.2 Hz over an octave spectrum.

Original languageEnglish
Article number231118
JournalApplied Physics Letters
Volume102
Issue number23
DOIs
StatePublished - 10 Jun 2013

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