Near-infrared single-photons from aligned molecules in ultrathin crystalline films at room temperature
Costanza Toninelli, Kevin T. Early, Juliane Bremi, Alois Renn, Stephan Götzinger, Vahid Sandoghdar · MPG.PuRe (Max Planck Society) · 2010
We investigate the optical properties of Dibenzoterrylene (DBT) molecules in a spin-coated crystalline film of anthracence. By performing single molecule studies, we show that the dipole moments of the DBT molecules are oriented parallel to the plane of the film. Despite a film thickness of only 20 nm, we observe an exceptional photostability at room temperature and photon count rates around 10 6 per second from a single molecule. These properties together with an emission wavelength around 800 nm make this system attractive for applications in nanophotonics and quantum optics. (C) 2010 Optical Society of America