PICOSECOND FLUORESCENCE SPECTROSCOPY USING A STREAK CAMERA
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Date
1977
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
The measurement of fluorescence decay reveals information about molecular processes that compete with the spontaneous emission of light. Using an appropriate detector, transform-limited light pulses in the picosecond and subpicosecond regime should reveal the nonexponentiality of many of these decays, an analysis of which will provide a clear picture of energy oscillations or exchange on a detailed molecular level. Even in the infancy of this technique--5 psec pulses and a technologically modern streak camera (Photochron II)--fairly accurate fluorescence decay curves in the subnanosecond region can be obtained routinely. Nonexponentiality caused by molecular rotation, exciton effects in crystals, and by super-radiance-type effects will be briefly discussed.
Description
Author Institution: Department of Chemistry, Texas Tech University; Department of Chemistry, The Royal Institution; Department of Physical Chemistry, University of Melbourne