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Proposal for a room-temperature diamond maser

Author

Listed:
  • Liang Jin

    (The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China)

  • Matthias Pfender

    (3rd Institute of Physics, University of Stuttgart)

  • Nabeel Aslam

    (3rd Institute of Physics, University of Stuttgart)

  • Philipp Neumann

    (3rd Institute of Physics, University of Stuttgart)

  • Sen Yang

    (3rd Institute of Physics, University of Stuttgart)

  • Jörg Wrachtrup

    (3rd Institute of Physics, University of Stuttgart)

  • Ren-Bao Liu

    (The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China)

Abstract

The application of masers is limited by its demanding working conditions (high vacuum or low temperature). A room-temperature solid-state maser is highly desirable, but the lifetimes of emitters (electron spins) in solids at room temperature are usually too short (∼ns) for population inversion. Masing from pentacene spins in p-terphenyl crystals, which have a long spin lifetime (∼0.1 ms), has been demonstrated. This maser, however, operates only in the pulsed mode. Here we propose a room-temperature maser based on nitrogen-vacancy centres in diamond, which features the longest known solid-state spin lifetime (∼5 ms) at room temperature, high optical pumping efficiency (∼106 s−1) and material stability. Our numerical simulation demonstrates that a maser with a coherence time of approximately minutes is feasible under readily accessible conditions (cavity Q-factor ∼5 × 104, diamond size ∼3 × 3 × 0.5 mm3 and pump power

Suggested Citation

  • Liang Jin & Matthias Pfender & Nabeel Aslam & Philipp Neumann & Sen Yang & Jörg Wrachtrup & Ren-Bao Liu, 2015. "Proposal for a room-temperature diamond maser," Nature Communications, Nature, vol. 6(1), pages 1-8, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9251
    DOI: 10.1038/ncomms9251
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