Wednesday, May 29, 2013

1305.6405 (Faraz A Inam et al.)

Tracking Emission Rate Dynamics of NV Centers in Nanodiamonds    [PDF]

Faraz A Inam, Andrew M Edmonds, Michael J Steel, Stefania Castelletto
Spontaneous emission from crystal centers is influenced by both the photonic local density of states and non-radiative processes. Here we monitor the spontaneous emission of single nitrogen vacancy (NV) centers as their host diamond is reduced in size from a large monolithic crystal to a nanocrystal by successive cycles of oxidation. The size reduction induces a quenching of the NV radiative emission. New non-radiative channels lead to a decrease of the fluorescence intensity and the excited state lifetime. In one case we observe the onset of blinking which may provide a route to understand these additional non-radiative decay channels.
View original:

No comments:

Post a Comment