Intersubband infrared absorption in stepped quantum wells under intense irradiation

Autor:	P. Aceituno, A. Hernández-Cabrera, F. T. Vasko
Rok vydání:	2005
Předmět:	Density matrix Absorption spectroscopy Condensed matter physics Terahertz radiation Chemistry Electron Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Adiabatic theorem General Materials Science Irradiation Atomic physics Adiabatic process Quantum well
Zdroj:	Journal of Physics: Condensed Matter. 17:6925-6933
ISSN:	1361-648X 0953-8984
Popis:	The effect of an intense THz irradiation on the relative intersubband absorption of electrons in stepped quantum wells of GaAs?GaAlAs is theoretically studied. Analytical expressions for the induced current are obtained by means of the adiabatic and resonant approximations within the matrix density formalism. This method allows one to predict the presence of a marked fine structure on the absorption, together with a shift and broadening of the absorption peaks, when the pump intensity is around the megawatts level.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a9e5362a4b04ee6395fcdca956f491b1 https://doi.org/10.1088/0953-8984/17/43/011 Zobrazit plný text záznamu