Ultrafast far-infrared dynamics probed by terahertz pulses: a frequency-domain approach. II. Applications |
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| Authors: | Nĕmec H Kadlec F Kadlec C Kuzel P Jungwirth P |
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| Institution: | 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. |
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| Abstract: | 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. |
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