Ultrafast far-infrared dynamics probed by terahertz pulses: a frequency-domain approach. II. Applications.
We present data obtained by time-resolved terahertz spectroscopy in selected semiconducting and molecular systems exhibiting subpicosecond far-infrared dynamics. We use a frequency-domain method which eliminates the influence of instrumental functions and artifacts due to frequency mixing and yields a two-dimensional transient conductivity of the photoexcited sample. This technique enables improving the attainable experimental time resolution and allows a simple qualitative interpretation of the results without a priori modeling. The quantitative interpretation is based on the time-dependent Drude and damped harmonic oscillator models.
Nĕmec
H
H
Institute of Physics, Academy of Sciences of the Czech Republic, and Center for Complex Molecular Systems and Biomolecules Na Slovance 2, 182 21 Prague 8, Czech Republic.
Kadlec
F
F
Kadlec
C
C
Kuzel
P
P
Jungwirth
P
P