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Manifestation in IR-Luminescence of Cross Relaxation Processes between NV-Centers in Weak Magnetic Fields.
- Source :
-
Journal of Applied Spectroscopy . Jan2022, Vol. 88 Issue 6, p1131-1143. 13p. - Publication Year :
- 2022
-
Abstract
- The effect of a magnetic field on the luminescence from an ensemble of NV-centers in diamond was studied experimentally and theoretically. It was found that the intensity of infrared luminescence associated with transitions between singlet levels of NV-centers showed a pronounced increase in a near-zero magnetic field. The influence of the power and polarization of the laser radiation on the amplitude and shape of the revealed local maximum in the IR-luminescence of NV-centers was investigated. An eight-level photophysical model of an NV-center in the presence of an arbitrarily directed magnetic field was constructed and used as a basis to calculate the intensity of the luminescence emitted by an ensemble of NV-centers in both the visible and infrared spectral regions. It was shown that a phenomenological allowance for cross relaxation of NV-centers between each other and with other diamond paramagnetic centers within the framework of this model allows the experimentally observed fluorescence features of an ensemble of NV-centers in the presence of weak magnetic fields to be described. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MAGNETIC fields
*LUMINESCENCE
*MAGNETIC field effects
*LASER beams
*NANODIAMONDS
Subjects
Details
- Language :
- English
- ISSN :
- 00219037
- Volume :
- 88
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Spectroscopy
- Publication Type :
- Academic Journal
- Accession number :
- 154738763
- Full Text :
- https://doi.org/10.1007/s10812-022-01290-z