Quantum cascade lasers ‘can detect falsified drugs’.
Researchers at the Fraunhofer Institute in Germany have developed a miniaturised quantum cascade laser (QCL) device that could provide a new, no-contact way of rapidly distinguishing falsified from genuine medicines.
The matchbox-sized unit has already showed its security potential in the rapid detection of explosive or toxic substances – at a distance of several metres – and Fraunhofer is in the process of seeking out industry partners to develop that commercial application. At the same time, it is assessing QCL for pharmaceutical applications, including not only detection of counterfeits but also monitoring the quality of medicines during manufacturing.
The semiconductor-based infrared laser technology comes from a tie-up between Fraunhofer’s Dresden-based Institute for Photonic Microsystems IPMS – which has been working on the detector component of the device – and its Institute for Applied Solid State Physics which developed the tunable laser chips.
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