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The 'Spaser' heats up laser technology
Date:1/12/2011

, it's like a laser, but much, much, much smaller." The Spaser uses surface plasma waves, whose wavelength can be much smaller than that of the light it produces. That's why a Spaser can be less than 100 nanometers, or one-tenth of a micron, long. This is much less than the wavelength of visible light, explains Prof. Bergman.

Fuelling the buzz

In the next year, the research team expects even more buzz to be created around their invention. In 2009, a team from Norfolk State University, Purdue University, and Cornell University managed to create a practical prototype.

The Spaser will extend the range of what's possible in modern electronics and optical devices, well beyond today's computer chips and memories, Prof. Bergman believes. The physical limitations of current materials are overcome in the Spaser because it uses plasmons, and not photons. With the development of surface plasma waves ― electromagnetic waves combined with an electron fluid wave in a metal ― future nano-devices will operate photonic circuitry on the surface of a metal. But a source of those waves will be needed. That's where the Spaser comes in.

Smaller than the wavelength of light, nano-sized plasmonic devices will be fast and small. Currently the research team is working on commercializing their invention, which they suggest could represent a quantum leap in the development of nano-sized devices.


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Contact: George Hunka
ghunka@aftau.org
212-742-9070
American Friends of Tel Aviv University
Source:Eurekalert

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