Ultrafast nonlinear optical response of weakly confined excitons in GaAs thin films

O. Kojima, T. Isu, J. Ishi-Hayase, M. Sasaki, M. Tsuchiya

Research output: Contribution to journalConference articlepeer-review

6 Citations (Scopus)

Abstract

We report on an ultrafast nonlinear optical response of weakly confined excitons in GaAs thin films observed by a two-beam degenerate four-wave-mixing (DFWM) technique. An ultrafast optical response comparable to the pulse width appears under ultrashort-pulse-laser excitation condition. We clarified from the DFWM spectra that the plural exciton states contribute to the ultrafast response. The results imply a possibility of ultrafast switching devices using weakly confined excitons.

Original languageEnglish
Pages (from-to)1731-1734
Number of pages4
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Volume4
Issue number5
DOIs
Publication statusPublished - 2007 Dec 1
Externally publishedYes
Event33rd International Symposium on Compound Semiconductors, ISCS-2006 - Vancouver, BC, Canada
Duration: 2006 Aug 132006 Aug 17

ASJC Scopus subject areas

  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Ultrafast nonlinear optical response of weakly confined excitons in GaAs thin films'. Together they form a unique fingerprint.

Cite this