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Portrait of Tönu Pullerits; Photo: Kennet Ruona

Tönu Pullerits

Professor

Portrait of Tönu Pullerits; Photo: Kennet Ruona

Coherent two-dimensional spectroscopy of a Fano model

Author

  • Daniel Finkelstein-Shapiro
  • Felipe Poulsen
  • Tönu Pullerits
  • Thorsten Hansen

Summary, in English

The Fano line shape arises from the interference of two excitation pathways to reach a continuum. Its generality has resulted in a tremendous success in explaining the line shapes of many one-dimensional spectroscopies - absorption, emission, scattering, conductance, photofragmentation - applied to very varied systems - atoms, molecules, semiconductors, and metals. Unraveling a spectroscopy into a second dimension reveals the relationship between states in addition to decongesting the spectra. Femtosecond-resolved two-dimensional electronic spectroscopy (2DES) is a four-wave mixing technique that measures the time evolution of the populations and coherences of excited states. It has been applied extensively to the dynamics of photosynthetic units, and more recently to materials with extended band structures. In this paper, we solve the full time-dependent third-order response, measured in 2DES, of a Fano model and give the system parameters that become accessible.

Department/s

  • Chemical Physics
  • NanoLund: Center for Nanoscience

Publishing year

2016-11-23

Language

English

Publication/Series

Physical Review B

Volume

94

Issue

20

Document type

Journal article

Publisher

American Physical Society

Topic

  • Physical Chemistry
  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1098-0121