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3-D Wave Mixing Process Explored

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March 29, 2006, UMEA, Sweden -- The concept that particles can be created in a vacuum is the focus of physicists from Umea University in Sweden and the Rutherford Appleton Lab in Oxfordshire, England, who hope to explore the vacuum by aiming three powerful laser streams at each other. Mattias Marklund and Gert Brodin, associate professors at Umea University, initiated the research. Marklund said the team proposes making use of four-wave mixing, in which three laser pulses interact to produce a fourth pulse of photons by "stimulating" the vacuum. "Under normal circumstances, beams of light...Read full article

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    Published: March 2006
    Glossary
    four-wave mixing
    A phenomenon that occurs in WDM and DWDM systems when three closely spaced signal wavelengths near the zero-dispersion wavelength interact with each other, producing a fourth wavelength that interferes with the original signal. A moderate amount of dispersion can be designed into some systems to ensure that this effect does not take place.
    four-wave mixinglaser streamsMattias MarklundNews & FeaturesparticlesphotonsRutherford Appleton LabUmea UniversityvacuumLasers

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