Optical tomography of ZnMn0.1S by laser scanning confocal fluorescence microscope

The distribution of manganese in a crystallite of ZnMn0.1S has been examine d by an unconventional method of laser scanning confocal fluorescence micro scope. This technique permits to locate the position of fluorescent species with a precision of 0.1 mu by optical sectioning of the crystallite and fu rther it creates three-dimensional images of fluorescent species. In dilute d manganese alloys, it is known that fluorescence is originated from 3d(5) transitions of Mn, and therefore, we have visualized the distribution of Mn is this alloy. It has been found that at the core of the crystallite (15 m u to 40 mu), the concentration is practically constant; meanwhile at both e dges then is a slow gradation of Mn concentration. (C) 1999 Elsevier Scienc e B.V. All rights reserved.