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Browsing by Author "Rohwer, EG"

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  • Madigoe, RJ; Botha, LR; Uys, H; Rohwer, EG; Smit, A (2012-10)
    According to a theoretical analysis, the control landscape of many quantum control problems has a very favourable topology regardless of the detailed nature of the Hamiltonian, provided that one has full control of the ...
  • 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 ...
  • Forbes, A; Du Plessis, A; Rohwer, EG (2006-07)
    Wavelength tuneability is demonstrated both experimentally and numerically. Refractive element shows some anomalies, intensity correctly reproduced, but not phase. Future work will consider impact of beta on performance of designs
  • Spangenberg, D-M; Dudley, Angela L; Neethling, PH; Rohwer, EG; Forbes, A (Optical Society of America, 2014)
    Spatial light modulators are ubiquitous tools for wavefront control and laser beam shaping but have traditionally been used with monochromatic sources due to the inherent wavelength dependence of the calibration process ...