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

O. Kojima, T. Isu, Junko Hayase, M. Sasaki, M. Tsuchiya

Research output: Contribution to journalArticle

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
Externally publishedYes

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excitons
four-wave mixing
thin films
pulse duration
pulses
excitation
lasers

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Ultrafast nonlinear optical response of weakly confined excitons in GaAs thin films. / Kojima, O.; Isu, T.; Hayase, Junko; Sasaki, M.; Tsuchiya, M.

In: Physica Status Solidi (C) Current Topics in Solid State Physics, Vol. 4, No. 5, 2007, p. 1731-1734.

Research output: Contribution to journalArticle

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AU - Isu, T.

AU - Hayase, Junko

AU - Sasaki, M.

AU - Tsuchiya, M.

PY - 2007

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