Jakob Melchard successfully defended his master thesis – congratulations!
Adaptive control of quantum cascade random lasers
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.
Andre’s PhD defense
Andre Brandstötter successfully defended his PhD on “Photonics with Loss and Disorder” today – congratulations!
The return of the spin echo
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.
Michael, Max and Markus defended
Michael Fraller, Maximilian Geismann and Markus Kaczvinszki successfully defended their Master theses – congratulations from all of us!
New Optica paper on non-Hermitian invisibility
In a new paper with Kostas, Ivor and Andre, we demonstrate how a dielectric medium can be made invisible for certain incoming beams when a suitable spatial distribution of gain and loss is added to the medium’s permittivity. (See highlight in Optica top downloads.)
Image featured in Nature Photonics
An image produced by Matthias Kühmayer for our recent work on optimal wave control was chosen as the header for the March online issue of Nature Photonics.
Broken symmetry in a microcavity laser
In a new paper with the group of Yun-Feng Xiao published today in Nature Communications we show how the non-linearity in a symmetric microcavity leads to the formation of lasing modes with a pronounced chirality that we can control dynamically and all-optically by the bias in the pump direction.
Our group is now member of ESQ
Our group is now part of the Erwin Schrödinger Center for Quantum Science & Technology (ESQ), which is an Austria-wide postdoc and discovery programme dedicated to highly innovative research. Funding comes from the Austrian Federal Ministry of Education, Science and Research (BMBWF) and the coordination is carried out by the Austrian Academy of Sciences (ÖAW).
Optimal wave fields for micro-manipulation in complex scattering environments
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).