Phase-coherent frequency combs in the vacuum ultraviolet via high-harmonic generation inside a femtosecond enhancement cavity

R. Jason Jones, Kevin D. Moll, Michael J. Thorpe, Jun Ye

Research output: Contribution to journalArticlepeer-review

436 Scopus citations

Abstract

We demonstrate the generation of phase-coherent frequency combs in the vacuum utraviolet spectral region. The output from a mode-locked laser is stabilized to a femtosecond enhancement cavity with a gas jet at the intracavity focus. The resulting high-peak power of the intracavity pulse enables efficient high-harmonic generation by utilizing the full repetition rate of the laser. Optical-heterodyne-based measurements reveal that the coherent frequency comb structure of the original laser is fully preserved in the high-harmonic generation process. These results open the door for precision frequency metrology at extreme ultraviolet wavelengths and permit the efficient generation of phase-coherent high-order harmonics using only a standard laser oscillator without active amplification of single pulses.

Original languageEnglish (US)
Article number193201
JournalPhysical review letters
Volume94
Issue number19
DOIs
StatePublished - May 20 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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