Sk. Sekatskii et Vs. Letokhov, OBSERVATION OF A SINGLE LASER-EXCITED CENTER AT THE POINT OF A CRYSTALLINE NEEDLE, JETP letters, 65(6), 1997, pp. 465-469
The points of lithium fluoride needles are investigated by laser photo
electronic projection microscopy. A situation in which a single atomic
-size source of electrons - an F-2 color center - is observed in the r
egion near the point is realized. As a result of the good fluorescence
properties of these centers, these needles can be used as the active
element of a scanning fluorescence microscope employing resonance tran
sfer of electronic excitation energy. (C) 1997 American Institute of P
hysics.