Linear optical absorption spectra of mesoscopic structures in intense THz fields: free particle properties
Abstract
We theoretically study the effect of THz radiation on the linear optical absorption spectra of semiconductor structures. A general theoretical framework, based on non-equilibrium Green functions, is formulated, and applied to the calculation of linear optical absorption spectrum for several non-equilibrium mesoscopic structures. We show that a blue-shift occurs and sidebands appear in bulk-like structures, i.e., the dynamical Franz-Keldysh effect [A.-P. Jauho and K. Johnsen, Phys. Rev. Lett. 76, 4576 (1996)]. An analytic calculation leads to the prediction that in the case of superlattices distinct stable steps appear in the absorption spectrum when conditions for dynamical localization are met.
Keywords
Cite
@article{arxiv.cond-mat/9704080,
title = {Linear optical absorption spectra of mesoscopic structures in intense THz fields: free particle properties},
author = {Kristinn Johnsen and Antti-Pekka Jauho},
journal= {arXiv preprint arXiv:cond-mat/9704080},
year = {2009}
}
Comments
13 Pages, RevTex using epsf to include 8 ps figures. Submitted to Phys. Rev. B (3 April 97)