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On the path towards a robust laser

illustratio laser topology © Vienna University of Technology

Now it has been demonstrated that topology can also play a crucial role in the generation of laser light. A collaboration between the Vienna University of Technology and research teams from the USA has led to the development of a special laser that emits light beams with characteristic topological properties.
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. They succeeded now in showing how topological concepts can also be made accessible in laser physics without resorting to photonic lattices or crystal structures.

"This could lead to important new applications, similar to the field of solid-state physics. It could potentially be used to build particularly robust, strong lasers in which you can amplify light over a long path," states Stefan Rotter.

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