Entwicklung von Verfahren zur magnetresonanztomographischen Messung der Hirndurchblutung / (2002)
Mainz, Univ., Diss., 2002.
Daniel M. Mittleman, Stefan Hunsche, Luc Boivin, Martin C. Nuss
We demonstrate tomographic T-ray imaging, using the timing information present in terahertz (THz) pulses in a reflection geometry. THz pulses are ref lected from refractive-index discontinuities...
Ultrafast dynamics of carrier-induced absorption changesin highly-excited CdSe nanocrystals (1996)
Hunsche, Stefan, Dekorsy, Thomas, Klimov, Victor, Kurz, Heinrich
We use femtosecond time-resolved transmission spectroscopy to study the density and time dependence of transient absorption changes of CdSe nanocrystals. Our data show pronounced absorption...
Time-resolved study of intervalence band thermalization in a GaAs quantum well (1996)
Kim, A. M. T., Hunsche, Stefan, Dekorsy, Thomas, Kurz, Heinrich, Köhler, Klaus
The thermalization of optically excited cold holes in a GaAs quantum well is investigated by femtosecond two-color pumpprobe measurements. Clear evidence is found for scattering from heavy-holes...
Quantum coherence of continuum states in the valence band of GaAs quantum wells (1996)
Dekorsy, Thomas, Kim, A. M. T., Cho, Gyu Cheon, Hunsche, Stefan, Bakker, Huib J., Kurz, Heinrich, ...
Quantum beats of heavy and light holes in GaAs quantum wells are investigated in femtosecond time-resolved four-wave mixing and transmission experiments as a function of optical excitation energy....
Impulsive softening of coherent phonons in tellurium (1995)
Hunsche, Stefan, Wienecke, K., Dekorsy, Thomas, Kurz, Heinrich
We investigate the dynamics of coherent optical phonons in tellurium after high-density excitation with femtosecond laser pulses. The data show a continuous redshift of the phonon frequency with...
Spektroskopie ultraschneller Prozesse in elektro-optischen Materialien / (1995)
Zugl.: Aachen, Techn. Hochsch., Diss, 1995.
Dynamics of electric field screening in a bulk GaAs modulator (1993)
Heesel, Heinrich, Hunsche, Stefan, Mikkelsen, Hakon, Dekorsy, Thomas, Leo, Karl, Kurz, Heinrich
The transient development of electric-field distributions in a biased GaAs film after low-density optical excitation is determined by measurements of Franz-Keldysh modulations with a time resolution...