Two-photon echo method to determine the transverse relaxation time of excitonic molecules

T. Takagahara

研究成果: Article査読

2 被引用数 (Scopus)

抄録

A nonlinear optical method to determine the transverse relaxation time of excitonic molecules by means of two-photon echo is proposed. In the case of two-photon transition such as excitonic molecule one needs three pulses to obtain an echo signal. When the wave-vector and frequency of the three successive pulses are denoted by k11, k22 and k33, the two-photon echo can be observed in the direction of 4k2-2k1-k3 with frequency 4ω2-2ω13. Tuning both ω1 and ω2 to be two-photon resonant with excitonic molecule, we can satisfy the phase-matching condition rather easily for appropriate values of ω3 due to the large dispersion of excitonic polaritons. From the correlation trace of the two-photon echo we can determine directly the transverse relaxation time of excitonic molecules.

本文言語English
ページ(範囲)179-182
ページ数4
ジャーナルSolid State Communications
38
3
DOI
出版ステータスPublished - 1981 4
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 凝縮系物理学
  • 材料化学

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