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
Hauptverfasser: Chen, Kuo-mei, Pei, Cheng-chih
Format: Artikel
Sprache:eng
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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).
ISSN:0021-9606
1089-7690
DOI:10.1063/1.477316