Scatterings
Quantum Cascade Lasers Gain Efficiency
Researchers have fabricated Quantum cascade lasers (QCLs) that significantly boost “wall plug efficiency,” or the ratio of the power the laser emits to the power that the device consumes.
(Left) OSA Fellow Manijeh Razeghi in her Northwestern University lab. (Right) Peter Q. Liu of Princeton University works in the optics lab.
Quantum cascade lasers (QCLs) have much potential in the mid-infrared spectral region, but their low energy efficiency has limited their application prospects. Two separate U.S. research teams have fabricated QCLs that significantly boost “wall plug efficiency,” or the ratio of the power the laser emits to the power that the device consumes.
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