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The cooling power of light

Light might one day be used to cool the materials through which it passes, instead of heating them, thanks to a breakthrough by engineers at Lehigh and Johns Hopkins Universities.
The discovery, says Yujie Ding, professor of electrical and computer engineering at Lehigh, could lead to smaller, lighter and cheaper communication devices with faster switching times, increased output and higher operating voltages.  Ding and  his colleague Jacob Khurgin of Johns Hopkins, both Fellows of the Optical Society of America, have achieved the most favorable ratio to date between opposing types of light-scattering phenomena that occur in semiconducting materials. Lehigh Ph.D. candidates Guan Sun and Ruolin Chen are conducting experiments under Ding’s supervision.The research has been supported by the National Science Foundation and the Defense Advanced Research Projects Agency (DARPA).

Ding

Professor Yujie Ding