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Optical properties of the nitrogen-vacancy singlet levels in diamond

by: V. M. Acosta, A. Jarmola, E. Bauch, D. Budker
Physical Review B, Vol. 82 (Nov 2010), 201202, doi:10.1103/physrevb.82.201202  Key: citeulike:11272561

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Abstract

We report measurements of the optical properties of the 1042 nm transition of negatively charged nitrogen-vacancy (NV) centers in type-1b diamond. The results indicate that the upper level of this transition couples to the ms=±1 sublevels of the 3E excited state and is short lived with a lifetime of ≲1 ns. The lower level is shown to have a temperature-dependent lifetime of 462(10) ns at 4.4 K and 219(3) ns at 295 K. The light-polarization dependence of 1042 nm absorption confirms that the transition is between orbitals of A1 and E character. The results shed light on the NV level structure and optical pumping mechanism.


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