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Browsing by Author "Ombinda-Lemboumba, S"

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  • Ombinda-Lemboumba, Saturnin; Du Plessis, A; Sparrow, RW; Molukanele, P; Botha, LR; Rohwer, EG; Steenkamp, CM; Van Rensburg, L (Academy of Science of South Africa, 2009-09)
    Measurements of ultrafast transient processes, of temporal durations in the picosecond and femtosecond regime, are made possible by femtosecond pump probe transient absorption spectroscopy. Such an ultrafast pump probe ...
  • Ombinda-Lemboumba, Saturnin; du Plessis, A; Botha, LR; Rohwer, EG; Steenkanp, CM (CSIR, 2010-09-01)
    Phthalocyanines are new class of photosensitiser used for photodynamic therapy. These drugs are used to treat small and superficial tumours. In recent years, a particular attention has been given to phthalocyanine in order ...
  • Ombinda-Lemboumba, Saturnin; Du Plessis, A; Botha, L; Roberts, DE; Molukanele, P; Sparrow, RW; Rohwer, EG; Steenkamp, CM (2009-07)
    The presentation discusses basic principles of pump-probe technique, possible transient absorption signals, LHC II and ZnPc, experimental setup, chirp measurement and correction methods. The results of the study, conclusion ...
  • Ombinda-Lemboumba, Saturnin; du Plessis, A; Botha, LR; Rohwer, EG; Steenkamp, CM (2010-10)
    The ultrafast dynamics of Zinc Phthalocyanine was studied using trasient absorption pump probe spectroscopy. Zinc Phthalocyanine was excited (pumped) at 672nm and probed by a white light continuum. The pump-probe technique ...