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Femtosecond electronic dephasing in large molecules in solution using mode suppression

✍ Scribed by C.J. Bardeen; C.V. Shank

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 439 KB
Volume: 203
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(93)85305-8

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✦ Synopsis

The femtosecond electronic depbasing oflarge molecules in solution is measured using a three-pulse photon echo mode cancellation technique. We have demonstrated the suppression of the quantum interference in the echo decay caused by the dominant ring breathing mode at 590 cm-' found in oxazine dyes. We have calculated the echo decay including the entire manifold of vibronic levels and have determined the dephasing time I-, to be in the range of 30 to 70 fs for the dye molecules nile blue and LD690.

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