Our most significant research accomplishments have involved using resonance Raman spectroscopy to learn about the structure and dynamics of molecular excited electronic states. This includes experimental methods for measuring absolute resonance Raman cross-sections as well as computational methods for carrying out efficient simulations of resonance Raman and associated spectroscopic observables using a time-domain formulation of steady-state spectroscopies. Significant applications include establishing solvent-induced electronic spectral broadening mechanisms, experimentally determining potential energy surfaces for excited-state isomerization and dissociation processes, developing a unified picture of the contribution of vibrational and solvent reorganization to electron-transfer dynamics, and understanding electron-phonon coupling in semiconductor quantum dots. We have also developed the theory and practice of resonance hyper-Raman spectroscopy and established the relationship between frequency-domain resonance Raman spectroscopy and time-domain impulsive stimulated resonance Raman scattering.

Awards and Achievements

  • American Association for the Advancement of Science
  • Optical Society of America
  • Fellow, AAAS ( 2004)
  • Fellow, American Physical Society ( 2001)
  • NSF Presidential Young Investigator Award ( 1989)