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Raman gas self-organizing into deep nano-trap lattice

Author

Listed:
  • M. Alharbi

    (GPPMM Group, XLIM Research Institute, CNRS UMR 7252, University of Limoges, Limoges 87410
    University of Bath)

  • A. Husakou

    (GPPMM Group, XLIM Research Institute, CNRS UMR 7252, University of Limoges, Limoges 87410
    Max Born Institute of Nonlinear Optics and Short Pulse Spectroscopy)

  • M. Chafer

    (GPPMM Group, XLIM Research Institute, CNRS UMR 7252, University of Limoges, Limoges 87410)

  • B. Debord

    (GPPMM Group, XLIM Research Institute, CNRS UMR 7252, University of Limoges, Limoges 87410)

  • F. Gérôme

    (GPPMM Group, XLIM Research Institute, CNRS UMR 7252, University of Limoges, Limoges 87410)

  • F. Benabid

    (GPPMM Group, XLIM Research Institute, CNRS UMR 7252, University of Limoges, Limoges 87410
    University of Bath)

Abstract

Trapping or cooling molecules has rallied a long-standing effort for its impact in exploring new frontiers in physics and in finding new phase of matter for quantum technologies. Here we demonstrate a system for light-trapping molecules and stimulated Raman scattering based on optically self-nanostructured molecular hydrogen in hollow-core photonic crystal fibre. A lattice is formed by a periodic and ultra-deep potential caused by a spatially modulated Raman saturation, where Raman-active molecules are strongly localized in a one-dimensional array of nanometre-wide sections. Only these trapped molecules participate in stimulated Raman scattering, generating high-power forward and backward Stokes continuous-wave laser radiation in the Lamb–Dicke regime with sub-Doppler emission spectrum. The spectrum exhibits a central line with a sub-recoil linewidth as low as ∼14 kHz, more than five orders of magnitude narrower than conventional-Raman pressure-broadened linewidth, and sidebands comprising Mollow triplet, motional sidebands and four-wave mixing.

Suggested Citation

  • M. Alharbi & A. Husakou & M. Chafer & B. Debord & F. Gérôme & F. Benabid, 2016. "Raman gas self-organizing into deep nano-trap lattice," Nature Communications, Nature, vol. 7(1), pages 1-9, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12779
    DOI: 10.1038/ncomms12779
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