University of Illinois engineer Milton Feng and his team have introduced an upgrade to transistor lasers that could boost computer processor speeds. Credit: Photo by L. Brian Stauffer
Engineers are unveiling an upgrade to the transistor laser that could be used to boost computer processor speeds – the formation of two stable energy states and the ability to switch between them quickly. Modern computers are limited by a delay formed as electrons travel through the tiny wires and switches on a computer chip. To overcome this electronic backlog, engineers would like to develop a computer that transmits information using light, in addition to electricity, because light travels faster than electricity.
Having two stable energy states, or bistability, within a transistor allows the device to for...
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