Excitonic versus plasma screening in highly excited gallium arsenide

Autor:	W. Schäfer, R.G. Ulbrich, G. W. Fehrenbach
Rok vydání:	1985
Předmět:	Absorption spectroscopy Chemistry Exciton Biophysics General Chemistry Condensed Matter Physics Biochemistry Atomic and Molecular Physics and Optics Spectral line Blueshift Gallium arsenide chemistry.chemical_compound Picosecond Excited state Atomic physics Excitation
Zdroj:	Journal of Luminescence. 30:154-161
ISSN:	0022-2313
DOI:	10.1016/0022-2313(85)90049-3
Popis:	We report band edge absorption spectra of GaAs under conditions of high electron-hole pair excitation in the range of 10 13 -10 17 cm -3 achieved with picosecond light pulses tuned (i) to the 1s exciton energy and (ii) to the continuum (ω#62; E g ), where critical densities for bleaching of the exciton absorption lines are much lower. A substantial blue shift of the 2s absorption line relative to the 1s exciton was found, the latter remained constant in energy up to complete bleaching.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::644f71540d61771643e81682310b5378 https://doi.org/10.1016/0022-2313(85)90049-3 Zobrazit plný text záznamu