Femtosecond dynamics of inter-Landau level excitations of a two dimensional electron gas in the quantum Hall regime

Author

Fromer, N.A. ; Schuller, C. ; Chemla ; Shahbazyan, T. ; Perakis, Ilias E. ; Driscoll, D. ; Gossard, Arthur C.

Author_Institution

Dept. of Phys., California Univ., Berkeley, CA, USA

fYear

2001

fDate

11-11 May 2001

Firstpage

246

Lastpage

247

Abstract

Summary form only given. The ultrafast optical response of systems with strong ground-state correlations, such as a two dimensional electron gas (2DEG) in the quantum Hall (QH) regime, is extremely difficult to describe and, in fact, still unexplored. The first study of electronic dephasing in the presence of a 2DEG in the QH regime was recently reported, focusing on the excitation of the 2DEG within the lowest Landau level (LL). We present here the first investigation of the dynamics of the 2DEG inter-LL excitations.

Keywords

III-V semiconductors; Landau levels; aluminium compounds; gallium arsenide; quantum Hall effect; semiconductor quantum wells; two-dimensional electron gas; 100 fs; 2D electron gas; 2DEG; GaAs-AlGaAs; electronic dephasing; femtosecond dynamics; inter-Landau level excitations; lowest Landau level; n-modulation doped GaAs/AlGaAs multiple quantum well; quantum Hall regime; strong ground-state correlations; two dimensional electron gas; ultrafast optical response; Electron optics; Extraterrestrial measurements; Fiber nonlinear optics; Magnetic field measurement; Nonlinear optics; Optical propagation; Physics; Shock waves; Stimulated emission; Ultrafast optics;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics and Laser Science Conference, 2001. QELS '01. Technical Digest. Summaries of Papers Presented at the

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-663-X

Type

conf

DOI

10.1109/QELS.2001.962199

Filename

962199