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Theoretical calculation proposes using heat to power QCLs

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Heat generated in a quantum cascade laser (QCL) – something that normally causes the lasing to turn off – could actually be used to power the device instead, according to a theoretical calculation developed at the University of Innsbruck. Helmut Ritsch of the university’s Institute for Theoretical Physics and doctoral candidate Kathrin Sandner came up with the novel idea while looking for ways to reduce heat in quantum cascade lasers. They proposed that the heating effect in such lasers not only could be avoided but also could be reversed and used to the laser’s...Read full article

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