Ultrafast optical responses of three-level systems in β-carotene: Resonance to a high-lying n1Ag - Excited state

M. Yoshizawa, D. Kosumi, M. Komukai, H. Hashimoto

研究成果: Article査読

17 被引用数 (Scopus)

抄録

Ultrafast optical phenomena in all-trans-β-carotene have been investigated by femtosecond absorption and fluorescence spectroscopy. Following a resonant pump pulse, both fluorescence and absorbance changes have a decay time of 150 fs. The signals are assigned to the lowest optically allowed singlet excited state, 11 B u + . Transmittance changes induced by nonresonant pump pulses depend on the pump photon energy. They are interpreted in terms of the ac Stark effect in three-level systems and two-photon absorption of the pump and probe pulses generating a high-lying n 1 A g - state.

本文言語English
ページ(範囲)325-330
ページ数6
ジャーナルLaser Physics
16
2
DOI
出版ステータスPublished - 2006 2

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 器械工学
  • 凝縮系物理学
  • 産業および生産工学

フィンガープリント

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