News of the WeekMaterials Science

Long-Wavelength Lasers Sniff Out New Uses

Science  03 Nov 2000:
Vol. 290, Issue 5493, pp. 916-917
DOI: 10.1126/science.290.5493.916

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Just a few weeks after two physicists won the Nobel Prize for figuring out how to make lasers out of semiconductors, researchers announced that they have made those lasers much more useful. A new technique permits the lasers to shine light in regions of the infrared spectrum previously inaccessible to similar devices. The advance may open the door to cheap devices to sniff explosives and other robotic sensors.