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Chirality-specific nonlinear spectroscopies in isotropic media

2002

Article

pf


Sum or difference frequency generation (SFG or DFG) in isotropic media is in the electric-dipole approximation only symmetry allowed for optically active systems. The hyperpolarizability giving rise to these three-wave mixing processes features only one isotropic component. It factorizes into two terms, an energy (denominator) factor and a triple product of transition moments. These forbid degenerate SFG, i.e., second harmonic generation, as well as the existence of the linear electrooptic effect (Pockels effect) in isotropic media. This second order response also has no static limit, which leads to particularly strong resonance phenomena that are qualitatively different from those usually seen in the ubiquitous even-wave mixing spectroscopies. In particular, the participation of two (not the usual one) excited states is essential to achieve dramatic resonance enhancement, We report our first efforts to see such resonantly enhanced chirality specific SFG.

Author(s): Fischer, Peer and Albrecht, AC
Journal: BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
Volume: 75
Number (issue): 5
Pages: 1119-1124
Year: 2002

Department(s): Micro, Nano, and Molecular Systems
Bibtex Type: Article (article)

DOI: 10.1246/bcsj.75.1119
Note: 10th International Conference on Time-Resolved Vibrational Spectroscopy (TRVS 2001), OKAZZAKI, JAPAN, MAY 21-25, 2001

BibTex

@article{ISI:000175911800032,
  title = {Chirality-specific nonlinear spectroscopies in isotropic media},
  author = {Fischer, Peer and Albrecht, AC},
  journal = {BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN},
  volume = {75},
  number = {5},
  pages = {1119-1124},
  year = {2002},
  note = {10th International Conference on Time-Resolved Vibrational Spectroscopy (TRVS 2001), OKAZZAKI, JAPAN, MAY 21-25, 2001}
}