Together with Dorian Bouchet and Allard Mosk from the Nanophotonics group at Utrecht University, we demonstrated how to shape the wave-front of a coherent laser beam such as to obtain with it the maximal possible information about a target hidden behind or inside a disordered medium. Our joint work was published in Nature Physics and is described in the following press release compiled by Florian Aigner from the press office at TU Wien (see also highlight in Physics World).
Together with the THz lab at TU Wien we show in a new Nature Communication that quantum cascade random lasers can be adaptively controlled by a suitably shaped infrared beam. Following a control strategy developed by Nicolas Bachelard, an initially multi-mode THz random laser is turned into a tunable single-mode source. Discussions of our work can be found at the Austrian Press Agency, Chemie.de and at Analytica News.
Together with a team from the Walther Meißner Institute and TU Munich, we showed in a recent Letter that the conventional Hahn echo pulse sequence from electron spin resonance produces a train of periodic, self-stimulated echoes when the involved spins are strongly coupled to a resonator. See discussions of this work on ChemEurope and on the websites of the Austrian Press Agency and TU Munich.
A new paper with our collaborators in Nice and London just appeared in Nature Photonics and is highlighted in OSA Optics & Photonics News and in Pro-Physik. In this work we demonstrate how to design the optimal wave front to deliver the highest possible force or torque onto a target embedded in a complex environment (see illustration on the left for a wave field transferring a strong torque onto a square target).
A joint work with Hasan Yılmaz and the group of Hui Cao just appeared in Physical Review Letters. We show that high-transmission channels in disordered media have an increased range of the angular memory-effect.