paper

Quasienergy Spectroscopy of Excitons

arXiv:cond-mat/9903200 · doi:10.1103/PhysRevLett.83.1207

Abstract

We theoretically study nonlinear optics of excitons under intense THz irradiation. In particular, the linear near infrared absorption and resonantly enhanced nonlinear sideband generation are described. We predict a rich structure in the spectra which can be interpreted in terms of the quasienergy spectrum of the exciton, via a remarkably transparent expression for the susceptibility, and show that the effects of strongly avoided quasienergy crossings manifest themselves directly, both in the absorption and transmitted sidebands.

4 pages RevTex, 3 eps figs included, as published

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