The Purdue University and FMN Laboratory team participated in Conference on Lasers and Electro-Optics, CLEO 2018
We report unprecedentedly bright fluorescence from single nitrogen-vacancy centers in nanodiamonds. The intensity enhancement is achieved by placing nanodiamonds in gaps between a metal film and randomly dispersed metal nanoparticles. The shortening of fluorescence lifetime below 1 ns combined with an efficient outcoupling of plasmons into the far-field lead to a detected fluorescence intensity in the range of 10 7 counts per second (cps). The photostability of nitrogen-vacancy centers allows reaching the saturation regime and estimating the total brightness enhancement resulting from the use of plasmonic nanostructures.
S. Bogdanov, M. Y. Shalaginov, A. Lagutchev, C.-C. Chiang, D. Shah, A.S. Baburin, I. A. Ryzhikov, I. A. Rodionov, A. Boltasseva, V. M. Shalaev 2018
Conference on Lasers and Electro-Optics, CLEO 2018 – Proceedings 8426778 (2018)