Abstract
We address for the first time the measurement of nonradiative decay rates in Cr-related centers in nanodiamonds. Compared to our previous quantum efficiency measurement of Cr centers created in bulk diamond, separate measurements of radiative and nonradiative decay rates in grown nanodiamonds prove more challenging due to size dependence effects. We demonstrate in this Letter that, using defocused dipole imaging and collection efficiency calculation via finite-difference time-domain (FDTD), a quantum efficiency up to 0.9 can be inferred to Cr-related centers showing a 2-level system photon statistics.
© 2011 Optical Society of America
Full Article | PDF ArticleMore Like This
Hao Li, Jun-Yu Ou, Vassili A. Fedotov, and Nikitas Papasimakis
Opt. Express 29(16) 25626-25631 (2021)
Mohamed Almokhtar, Masazumi Fujiwara, Hideaki Takashima, and Shigeki Takeuchi
Opt. Express 22(17) 20045-20059 (2014)
Shailesh Kumar, Valery A. Davydov, Viatcheslav N. Agafonov, and Sergey I. Bozhevolnyi
Opt. Mater. Express 7(7) 2586-2596 (2017)