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Regular Light Bulbs Made Super-Efficient with Ultra-Fast Laser
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| Contributor | RP |
| Last Edited | RP Jun 01, 2009 06:25pm |
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| Category | Announcement |
| News Date | Friday, May 29, 2009 12:00:00 AM UTC0:0 |
| Description | Laser Process Doubles Brightness for the Same Amount of Energy
An ultra-powerful laser can turn regular incandescent light bulbs into power-sippers, say optics researchers at the University of Rochester. The process could make a light as bright as a 100-watt bulb consume less electricity than a 60-watt bulb while remaining far cheaper and radiating a more pleasant light than a fluorescent bulb can.
The laser process creates a unique array of nano- and micro-scale structures on the surface of a regular tungsten filament—the tiny wire inside a light bulb—and theses structures make the tungsten become far more effective at radiating light.
In addition to increasing the brightness of a bulb, Guo's process can be used to tune the color of the light as well. Though Guo cannot yet make a simple bulb shine pure blue, for instance, he can change the overall radiated spectrum so that the tungsten, which normally radiates a yellowish light, could radiate a more purely white light. |
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