Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9586175 | Journal of Luminescence | 2005 | 5 Pages |
Abstract
We use an experimental technique which allows to push the spectral resolution for the spectroscopy of solids in the sub-μeV regime. The core element of the experimental apparatus is a frequency-stabilized ring-dye laser, with a resolution of a few neV. By means of this technique, we study dynamic band gap shifts of â¼0.1 μeV in Cu2O. A model is proposed, which explains the experimental findings in terms of a photothermal bistability. Furthermore, the magnetic field dependence of the ortho- and paraexciton resonances is studied. This yields a precise determination of the exchange splitting between the para- and the orthoexciton levels.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
G. Baldassarri Höger von Högersthal, G. Dasbach, D. Fröhlich, M. Kulka, H. Stolz, M. Bayer,