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Phase-locking to a free-space terahertz comb for metrological-grade terahertz lasers

Author

Listed:
  • L. Consolino

    (LENS, European Laboratory for NonLinear Spectroscopy
    INO, Istituto Nazionale di Ottica – CNR, Largo E. Fermi 6)

  • A. Taschin

    (LENS, European Laboratory for NonLinear Spectroscopy
    INO, Istituto Nazionale di Ottica – CNR, Largo E. Fermi 6)

  • P. Bartolini

    (LENS, European Laboratory for NonLinear Spectroscopy)

  • S. Bartalini

    (LENS, European Laboratory for NonLinear Spectroscopy
    INO, Istituto Nazionale di Ottica – CNR, Largo E. Fermi 6)

  • P. Cancio

    (LENS, European Laboratory for NonLinear Spectroscopy
    INO, Istituto Nazionale di Ottica – CNR, Largo E. Fermi 6)

  • A. Tredicucci

    (NEST, Istituto Nanoscienze – CNR and Scuola Normale Superiore)

  • H. E. Beere

    (Cavendish Laboratory, University of Cambridge)

  • D. A. Ritchie

    (Cavendish Laboratory, University of Cambridge)

  • R. Torre

    (LENS, European Laboratory for NonLinear Spectroscopy
    Università di Firenze)

  • M. S. Vitiello

    (INO, Istituto Nazionale di Ottica – CNR, Largo E. Fermi 6
    NEST, Istituto Nanoscienze – CNR and Scuola Normale Superiore)

  • P. De Natale

    (LENS, European Laboratory for NonLinear Spectroscopy
    INO, Istituto Nazionale di Ottica – CNR, Largo E. Fermi 6)

Abstract

Optical frequency comb synthesizers have represented a revolutionary approach to frequency metrology, providing a grid of frequency references for any laser emitting within their spectral coverage. Extending the metrological features of optical frequency comb synthesizers to the terahertz domain would be a major breakthrough, due to the widespread range of accessible strategic applications and the availability of stable, high-power and widely tunable sources such as quantum cascade lasers. Here we demonstrate phase-locking of a 2.5 THz quantum cascade laser to a free-space comb, generated in a LiNbO3 waveguide and covering the 0.1–6 THz frequency range. We show that even a small fraction (

Suggested Citation

  • L. Consolino & A. Taschin & P. Bartolini & S. Bartalini & P. Cancio & A. Tredicucci & H. E. Beere & D. A. Ritchie & R. Torre & M. S. Vitiello & P. De Natale, 2012. "Phase-locking to a free-space terahertz comb for metrological-grade terahertz lasers," Nature Communications, Nature, vol. 3(1), pages 1-5, January.
    • Handle: RePEc:nat:natcom:v:3:y:2012:i:1:d:10.1038_ncomms2048
    DOI: 10.1038/ncomms2048
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