Broadband THz study of excitonic resonances in the high-density regime

Details Broadband THz study of excitonic resonances in the high-density regime Broadband THz study of excitonic resonances in the high-density regime

2005-08-03

arxiv.org/abs/cond-mat/0508082v2

Phys. Rev. B 72, 161314(R) (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.72.161314

We report the first terahertz study of the intra-excitonic 1s-2p transition at high excitation densities in GaAs/AlGaAs quantum wells. A strong shift, broadening, and ultimately the disappearance of this resonance occurs with increasing density, after ultrafast photoexcitation at the near-infrared exciton line. Densities of excitons and unbound electron-hole pairs are followed quantitatively using a model of the composite terahertz dielectric response. Comparison with near-infrared absorption changes reveals a significantly enhanced energy shift and broadening of the intra-excitonic resonance.

Affiliated with

Also associated with

No associations

Rating

Broadband THz study of excitonic resonances in the high-density regime 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 Broadband THz study of excitonic resonances in the high-density regime, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Broadband THz study of excitonic resonances in the high-density regime will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-39740