Seeing clearly: 2D nanoscopy achieves direct imaging of nanoscale coherence
Tuesday, October 18, 2011 - 08:30
in Physics & Chemistry
(PhysOrg.com) -- Light has its limitations in this case not velocity, but rather its diffraction limit, which determines the spatial interaction volume in all implementations of optical spectroscopy and is in general also valid for time-resolved studies. One specific technique that has recently become very successful is coherent two-dimensional (2D) spectroscopy. However, because it uses three ingoing waves and one outgoing wave, nanoscale events can be imaged only indirectly by averaging a population of quantum systems in the spectroscopic space.