Light Switch: Crystal flaws tune the wavelengths | Science News

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Light Switch: Crystal flaws tune the wavelengths

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2:15pm, May 28, 2003

By exploiting a defect in a semiconductor's crystal structure, researchers have come up with a potentially inexpensive way to make fast fiberoptic communications components. That development, in turn, might speed the long-awaited extension of optical networks into homes, says Janet L. Pan of Yale University.

Working with gallium arsenide, the primary material from which lasers for compact-disk players and the high-speed electronics for cell phones are made, Pan and her colleagues have created a light-emitting diode (LED). The device converts electric pulses into light emissions at the pivotal infrared wa

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