Laser-driven torsional coherences

Benjamin A. Ashwell, Ramakrishna Sesha Shankar, Tamar Seideman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


We discuss several interesting phenomena in the dynamics of strong field-triggered torsional wavepackets, which carry implications for the problem of torsional alignment in nonrigid molecules. Our results point to the origin and consequences of the fundamental differences between rotational and torsional coherences. In addition, we provide design guidelines for torsional control experiments by illustrating the role played by the laser intensity, pulse width, temperature, and molecular parameters. Specifically, as an example of several classes of molecules expected to make suitable candidates for laboratory experiments, we explore the torsional control of 9-[2-(anthracen-9-yl)ethynyl] anthracene and contrast it with that of biphenyl. Finally, we propose several potential applications for coherent torsional control in chemistry, physics, and material science.

Original languageEnglish (US)
Article number044310
JournalJournal of Chemical Physics
Issue number4
StatePublished - Jan 28 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


Dive into the research topics of 'Laser-driven torsional coherences'. Together they form a unique fingerprint.

Cite this