ANYL 229 |
| Absorption and fluorescence spectroscopy is based on changing the populations of different quantum states. Quenching destroys excited state populations and limits fluorescence methods to molecules with low quenching rates. A new family of fully coherent spectroscopies has been developed that are based on creating coherent entanglements of quantum states that emit intensely in directional beams that can be easily measured. Unlike populations, coherences are like those responsible for refraction and NMR- their emission cannot be quenched. A particularly interesting capability is the creation of the same multiple- and zero- quantum coherences used in NMR. In this talk, we demonstrate all possible coherent spectroscopies using three beams including the CT3 and HMQC' methods proposed by Mukamel. We show that the methods are inherently 6-dimensional experiments and allow one to apply coherent multidimensional spectroscopy to the wide range of quantum states of interest in science. |
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Honoring Mary Wirth, Recipient of the Spectrochemical Analysis Award
1:30 PM-5:00 PM, Tuesday, 12 September 2006 Moscone Center -- Room 123, Oral
Division of Analytical Chemistry |