Abstract
CdS and CdSe microcrystallites embedded in silicate glasses are interesting materials for studying 3-D quantum confinement effects. Three-dimensional confinement is clearly observed when the particle size approaches, or is smaller than, the exciton Bohr radius and the size distribution is uniform. The microcrystallite sizes and their distribution may be controlled by careful heat treatment. We made a comprehensive study of optical nonlinearities of a number of CdSe quantum dot samples using nanosecond and femtosecond laser techniques.
© 1989 Optical Society of America
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