CASP Distinguished Colloquium
Ultrafast Nanooptics: Imaging with Nanometer Spatial and Femtosecond Temporal Resolution
Prof. Markus Raschke
Department of Physics, Department of Chemistry, and JILA
University of Colorado at Boulder
Monday, February 13th, 10am
Chemistry Division Auditorium, TA-46, Bld. 535, Rm. 103
The natural time- and length-scales of the elementary excitations in matter are defined by the femtosecond vibrational and electron dynamics correlated with nanometer scale scattering lengths. To access this yet largely unexplored regime of the light-matter interaction on the nanoscale we combined nonlinear and ultrafast spectroscopy techniques with scattering-type near-field optical microscopy where the optical antenna properties of nanoscopic metal tips provide the necessary local field enhancement and spatial confinement. I will discuss several recent examples of probing the electron and vibration dynamics on the nanoscale.