CaltechAUTHORS
Published October 29, 1999 | Version public
Journal Article Metadata-only

Femtosecond dynamics of ground-state vibrational motion and energy flow: polymers of diacetylene

Creators

  • 1. ROR icon University of Würzburg
  • 2. ROR icon California Institute of Technology

Abstract

In this Letter we report femtosecond (fs) dynamics of the ground-state vibrational motions and energy flow in polymers of diacetylene embedded in monomer single crystals at 8 K. The ground-state wavepackets are prepared and probed using fs-CARS methods. The observed coherence of the wavepacket among four vibrational modes, including the Fermi resonance, elucidates the time scales and the selectivity involved. From measurements of the dephasing times we establish the nature of the weak coupling to bath modes. The phase-shifted oscillatory behavior observed in the 3-D images suggests the correspondence with IVR dynamics.

Additional Information

© 1999 Elsevier Science B.V. Received 26 July 1999, Available online 3 January 2000. We thank Mrs. Irene Müller of the University of Bayreuth for growing excellent samples of FBS-PDA. We are also grateful to Dr. H. Schwoerer for his help in setting up the fs laser system. One of us (T.C.) thanks the Stiftung Volkswagenwerk for a postgraduate scholarship. Financial support by the German Science Foundation (SFB 347, Project C-2 and SFB 410, Project C-3) is highly acknowledged. A.H.Z. is a Röntgen Gast Professor at the University of Würzburg.

Additional details

Identifiers

Eprint ID
69839
Resolver ID
CaltechAUTHORS:20160823-093535383

Funding

Stiftung Volkswagenwerk
Deutsche Forschungsgemeinschaft (DFG)
SFB-347
Deutsche Forschungsgemeinschaft (DFG)
SFB-410
University of Würzburg

Dates

Created
2016-08-23
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Updated
2022-04-13
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