Tailoring of nano-structures doped with optically active rare earth ions for single atom spectroscopy (Invited Paper)
Zameer U. Hasan, A. Adamczyk, Aras Konjhodzic +2 more
Pulsed Laser Chemical Vapor Deposition (PLCVD) has been used to fabricate single atoms doped nanoparticles of magnesium sulfide. These particles were dispersed in optically transparent Poly-methyl-methacrylate (PMMA) films for near field nano-microscopy such that each nanoparticle doped with a single europium atom falls in the focusing range of the near field microscope. By atomic tailoring, the concentration of the doubly ionized europium, Eu2+, has been maximized in these nanoparticles. The energy and the oscillator strength of the 4f7-4f65d1 electronic transition has been tailored to maximize its addressing by photons in single atom spectroscopy experiments. Results have been presented on the fabrication of these single atom doped nanoparticles and their spectroscopy by laser excited fluorescence technique. Studies of a single Eu2+ ion by confocal micro-spectroscopy are in progress.
Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•May 23, 2005•0 citations