Terahertz probes of transient conducting and insulating phases in quasi-2D electron-hole gases

R. A. Kaindl, D. Hägele, M. A. Carnahan, R. Lövenich, D. S. Chemla

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We employ ultrafast terahertz (THz) pulses to study the dynamical interplay of optically-induced excitons and unbound electron-hole pairs in GaAs/AlGaAs quantum wells. A distinct low-energy oscillator appears upon resonant excitation of heavy-hole excitons, linked to transitions between their internal degrees of freedom. Time-resolving changes in the THz conductivity, we can observe dynamical transitions between conducting and insulating phases as excitons form or ionize on ultrashort timescales.

Original languageEnglish (US)
Title of host publicationConference Digest of the 2004 Joint 29th International Conference on Infrared and Millimeter Waves and 12th International Conference on Terahertz Electronics
EditorsM. Thumm, W. Wiesbeck
Pages503-504
Number of pages2
StatePublished - 2004
Externally publishedYes
EventConference Digest of the 2004 Joint 29th International Conference on Infrared and Millimeter Waves and 12th International Conference on Terahertz Electronics - Karlsruhe, Germany
Duration: Sep 27 2004Oct 1 2004

Publication series

NameConference Digest of the 2004 Joint 29th International Conference on Infrared and Millimeter Waves and 12th International Conference on Terahertz Electronics

Other

OtherConference Digest of the 2004 Joint 29th International Conference on Infrared and Millimeter Waves and 12th International Conference on Terahertz Electronics
CountryGermany
CityKarlsruhe
Period9/27/0410/1/04

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint Dive into the research topics of 'Terahertz probes of transient conducting and insulating phases in quasi-2D electron-hole gases'. Together they form a unique fingerprint.

Cite this