Ultrafast lensing effect of β-carotene in n-hexane solution

Kazuki Ito, Makiko Mutoh, Akira Harata, Tsuguo Sawada

研究成果: Contribution to journalArticle査読

17 被引用数 (Scopus)

抄録

An ultrafast lensing effect of photo-induced beam focusing and defocusing was observed for dilute all-trans-β-carotene solutions in n-hexane. Sub-picosecond pump and probe pulses were used with a low power semi-resonant excitation at 390 nm and a non-resonant probe at 780 nm. High speed averaging with intensity-modulated mode-locked pulse trains successfully provided a double exponential response where the pre-exponential factors had different signs. The time constants were 0.2 and 10 ps, respectively corresponding to those of two excited states of β-carotene. Similarity in lensing intensity dependence between the ultrafast effect and a slower thermal effect was also examined.

本文言語英語
ページ(範囲)349-354
ページ数6
ジャーナルChemical Physics Letters
275
3-4
DOI
出版ステータス出版済み - 8 29 1997
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)
  • 物理化学および理論化学

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