Posts Tagged ‘Kale Franz’
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Quantum cascade lasers are small and efficient sources of mid-infrared laser beams, which are useful in medicine and environmental sensing. (Photo: Gmachl Lab)
PRINCETON (US)—Scientists have discovered a more efficient way to produce a high-performing laser. The finding could lead to lasers that operate at higher temperatures than existing devices, making them ideally suited for applications in air quality monitoring, medical diagnostics, and even homeland security.
The phenomenon was discovered by a team of Princeton University researchers using in a type of device called a quantum cascade laser, in which an electric current flowing through a specially designed material produces a laser beam. Unlike other lasers, quantum cascade lasers operate in the mid- and far-infrared range, and can be used to detect even minute traces of water vapor, ammonia, nitrogen oxides, and other gases that absorb infrared light.
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