ESQ Faculty member Stefan Rotter, together with his colleagues at TU Wien and collaborators have published their latest findings on lasers in Science

03/02/2022

ESQ Faculty member Stefan Rotter, together with his colleagues at TU Wien and collaborators have published their latest findings on lasers in Science

Stefan Rotter, his colleagues at TU Wien and his collaborators at the Universities of Southern California and of Central Florida have published their latest findings in Science

In materials research, considerable progress is made by exploiting insights from the field of topology. Similar tools can now be applied to lasers.

Alexander Schumer and Stefan Rotter have been investigating the topological properties of light waves with the help of computer simulations in Vienna for quite some time. How to apply the acquired knowledge to laser physics was the subject of Alexander Schumer's doctoral thesis. As part of an EU-funded project, he spent several months in California and Florida, where the research results were implemented in experiments together with the research groups there. The laser that has now been realized consists of two closely spaced waveguides. The light can propagate along these waveguides and is reflected at their ends. As it travels back and forth, the light encircles an exceptional point singularity, causing the light fields that are emitted from the two different facets of the cavity to be topologically linked.

For more information see:

https://www.tuwien.at/en/tu-wien/news/news-articles/news/donuts-und-laserstrahlen

https://www.science.org/doi/10.1126/science.abl6571

Erwin Schrödinger Center for Quantum Science & Technology (ESQ)

ESQ Faculty member Stefan Rotter, together with his colleagues at TU Wien and collaborators have published their latest findings on lasers in Science

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