Journal of Physical Chemistry, Vol.100, No.33, 13892-13894, 1996
Dibenzoterrylene in Naphthalene - A New Crystalline System for Single-Molecule Spectroscopy in the Near-Infrared
We report on a new system for single molecule spectroscopy in the near infrared : dibenzoterrylene (DBT) in a naphthalene crystal. Its absorption band (758 nm) is interesting because single-frequency laser diodes may serve as cheap sources for near-infrared light. Single molecules in this system have a high fluorescence yield and narrow homogeneous lines and show neither spectral diffusion nor significant triplet population. All these characteristics make this new system very promising for future quantum optical measurements.