Optical properties of a single-colour centre in diamond with a green zero-phonon line

Jason M Smith, Fabio Grazioso, Brian R Patton, Philip R Dolan, Matthew L Markham, Daniel J Twitchen

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We report the photoluminescence characteristics of a colour centre in diamond grown by plasma-assisted chemical vapour deposition. The colour centre emits with a sharp zero-phonon line at 2.330 eV (λ=532 nm) and a lifetime of 3.3 ns, thus offering potential for a high-speed single-photon source with green emission. It displays a vibronic emission spectrum with a Huang–Rhys parameter of 2.48 at 77 K. Hanbury–Brown and Twiss measurements reveal that the electronic level structure of the defect includes a metastable state that can be populated from the optically excited state.
Original languageEnglish
Article number045005
Number of pages13
JournalNew Journal of Physics
Publication statusPublished - 5 Apr 2011


  • optical properties
  • photoluminescence characteristics
  • vibronic emission spectrum
  • diamond
  • plasma-assisted
  • chemical vapour deposition
  • vibronic emission spectrums

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