Helicity of orientation parameters of photofragments in fluorescence-imaging experiments
A detection scheme in fluorescence-imaging experiments is presented for determining helicity of orientation parameters of photofragments prepared by circularly polarized photolysis lasers. In a framework of density matrix theory, explicit fluorescence intensity formulas are derived for detection of...
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Veröffentlicht in: | The Journal of chemical physics 1998-10, Vol.109 (16), p.6647-6654 |
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Hauptverfasser: | , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | A detection scheme in fluorescence-imaging experiments is presented for determining helicity of orientation parameters of photofragments prepared by circularly polarized photolysis lasers. In a framework of density matrix theory, explicit fluorescence intensity formulas are derived for detection of right- and left-circularly polarized fluorescence photons in various transition sequences. A pattern recognition from fluorescence images of photofragments in a state of definite helicity with respect to their recoil directions has been established, where differences between left- and right-circularly polarized fluorescence image patterns should be taken. Information on the coherence among various magnetic sublevels of an angular momentum state can be obtained by monitoring fluorescence images in a ΔJ=−1 transition (P branch in absorption). |
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ISSN: | 0021-9606 1089-7690 |
DOI: | 10.1063/1.477316 |