Physics – Condensed Matter – Materials Science
Scientific paper
1997-11-19
Physics
Condensed Matter
Materials Science
Topical review in Semiconductor Science and Technology (in press) (Some of the figures are not available in electronic form)
Scientific paper
10.1088/0268-1242/13/2/001
A review of coherent phenomena in photoexcited semiconductors is presented. In particular, two classes of phenomena are considered: On the one hand the role played by optically-induced phase coherence in the ultrafast spectroscopy of semiconductors; On the other hand the Coulomb-induced effects on the coherent optical response of low-dimensional structures. All the phenomena discussed in the paper are analyzed in terms of a theoretical framework based on the density-matrix formalism. Due to its generality, this quantum-kinetic approach allows a realistic description of coherent as well as incoherent, i.e. phase-breaking, processes, thus providing quantitative information on the coupled ---coherent vs. incoherent--- carrier dynamics in photoexcited semiconductors. The primary goal of the paper is to discuss the concept of quantum-mechanical phase coherence as well as its relevance and implications on semiconductor physics and technology. In particular, we will discuss the dominant role played by optically induced phase coherence on the process of carrier photogeneration and relaxation in bulk systems. We will then review typical field-induced coherent phenomena in semiconductor superlattices such as Bloch oscillations and Wannier-Stark localization. Finally, we will discuss the dominant role played by Coulomb correlation on the linear and non-linear optical spectra of realistic quantum-wire structures.
No associations
LandOfFree
Coherent phenomena in semiconductors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Coherent phenomena in semiconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coherent phenomena in semiconductors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-460576