Stimulated emission from nitrogen-vacancy centres in diamond

Jan Jeske (), Desmond W. M. Lau, Xavier Vidal, Liam P. McGuinness, Philipp Reineck, Brett C. Johnson, Marcus W. Doherty, Jeffrey C. McCallum, Shinobu Onoda, Fedor Jelezko, Takeshi Ohshima, Thomas Volz, Jared H. Cole, Brant C. Gibson and Andrew D. Greentree
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Jan Jeske: Chemical and Quantum Physics, School of Science, RMIT University
Desmond W. M. Lau: ARC Centre of Excellence for Nanoscale BioPhotonics, School of Science, RMIT University
Xavier Vidal: ARC Centre of Excellence for Engineered Quantum Systems, Macquarie University
Liam P. McGuinness: Institut für Quantenoptik, Universität Ulm
Philipp Reineck: ARC Centre of Excellence for Nanoscale BioPhotonics, School of Science, RMIT University
Brett C. Johnson: School of Physics, University of Melbourne, Parkville
Marcus W. Doherty: Laser Physics Centre, Research School of Physics and Engineering, Australian National University
Jeffrey C. McCallum: School of Physics, University of Melbourne, Parkville
Shinobu Onoda: National Institutes for Quantum and Radiological Science and Technology
Fedor Jelezko: Institut für Quantenoptik, Universität Ulm
Takeshi Ohshima: National Institutes for Quantum and Radiological Science and Technology
Thomas Volz: ARC Centre of Excellence for Engineered Quantum Systems, Macquarie University
Jared H. Cole: Chemical and Quantum Physics, School of Science, RMIT University
Brant C. Gibson: ARC Centre of Excellence for Nanoscale BioPhotonics, School of Science, RMIT University
Andrew D. Greentree: Chemical and Quantum Physics, School of Science, RMIT University

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Abstract Stimulated emission is the process fundamental to laser operation, thereby producing coherent photon output. Despite negatively charged nitrogen-vacancy (NV−) centres being discussed as a potential laser medium since the 1980s, there have been no definitive observations of stimulated emission from ensembles of NV− to date. Here we show both theoretical and experimental evidence for stimulated emission from NV− using light in the phonon sidebands around 700 nm. Furthermore, we show the transition from stimulated emission to photoionization as the stimulating laser wavelength is reduced from 700 to 620 nm. While lasing at the zero-phonon line is suppressed by ionization, our results open the possibility of diamond lasers based on NV− centres, tuneable over the phonon sideband. This broadens the applications of NV− magnetometers from single centre nanoscale sensors to a new generation of ultra-precise ensemble laser sensors, which exploit the contrast and signal amplification of a lasing system.

Date: 2017
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DOI: 10.1038/ncomms14000

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