Beat structure in spectrally resolved four-wave mixing under crosslinear polarization in GaAs quantum wells

Suryadi, Teruya Ishihara, H. Ohyama, Y. Kadoya, M. Yamanishi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The polarization dependence of beat structure in spectrally resolved four-wave mixing was investigated on 50 angstroms GaAs multiple quantum wells. Under crosslinear polarization we observed a beating structure at higher energy region of the main spectral peak due to biexciton-exciton transition. The beat has a period of 0.95 ps and is constructive at delay time T = 0 ps, which suggests the corresponding double Feynman diagrams to be of the same type. By shortening the central wavelength of the sub-ps laser, we observed the distinctive peak corresponding to the beat period. Even in GaAs system, which is generally believed to have a small biexcitonic effect, there are two effective 2-exciton states with well-defined energies which are required to describe the third-order optical nonlinearly.

Original languageEnglish
Pages (from-to)572-575
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume7
Issue number3
DOIs
Publication statusPublished - 2000 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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