https://doi.org/10.1051/epjconf/201819004012
Spontaneous transitions to enhanced fluorescence for GeV centers in a single microcrystalline diamond
1
Institute for Spectroscopy RAS, 5 Fizicheskaya Str., Troitsk, Moscow 108840, Russia
2
National Research University Higher School of Economics, 20 Myasnitskaya Str., Moscow 101000 Russia
3
Moscow State Pedagogical University, 1/1 M. Pirogovskaya Str., Moscow 119991, Russia
4
Vereshchagin Institute for High Pressure Physics of the Russian Academy of Sciences, 14 Kalushskoye Shosse, Troitsk, Moscow 108840, Russia
* Corresponding author: lozing@isan.troitsk.ru
Published online: 26 September 2018
We propose a theoretical explanation of spontaneous transitions between dim and bright fluorescence intensity states observed experimentally in a microcrystal of diamond with germanium-vacancy colour centres driven by a continuous wave laser. We use a generalized system of optical Maxwell-Bloch equations derived for an emitter in an ensemble of motionless similar particles embedded in a dielectric medium, which is transparent for the incident light. A numerical analysis of transient regimes and several models of slow damping of the bright luminescence mode are reported.
© The Authors, published by EDP Sciences, 2018
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