Physicists have devised a plan to correct instabilities in powerful semi-conductor lasers. By introducing ‘quantum chaos’, they intend to prevent laser filaments, which lead to instabilities and thus ensure conherence.
High-powered semiconductor lasers are used in materials processing, biomedical imaging and industrial research, but the emitted light they produce is affected by instabilities, making it incoherent. The work was carried out by a research team from Imperial College London, Yale University, Nanyang Technological University and Cardiff University. To create a different kind of chaos -- the quantum chaotic landscape -- the team designed a D-shaped of cavity for the laser system.