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Metallic Slits Modify Laser Pulses

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Calculations by Abdulhakem Y. Elezzabi and Anthony Dechant at the University of Alberta in Edmonton, Alberta, Canada, indicate that the design of arrays of subwavelength metallic slits can be used to control the temporal profile of femtosecond optical pulses. The team published its findings in the June 7 issue of Applied Physics Letters. Considerable research has been devoted to the behavior of electromagnetic radiation that interacts with subwavelength periodic metal structures. Such work, however, generally has concentrated on CW radiation. The new research instead focused on the effects...Read full article

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    Published: July 2004
    Glossary
    electromagnetic radiation
    Radiation emitted from vibrating charged particles. A combination of oscillating electrical and magnetic fields that propagates through otherwise empty space with the velocity of light. This constant velocity equals the alternation frequency multiplied by the wavelength; hence, the frequency and wavelength are inversely proportional to each other. The spectrum of electromagnetic radiation is continuous over all frequencies.
    As We Go To PressBreaking Newselectromagnetic radiationfemtosecond optical pulsesmetallic slitsPresstime BulletinUniversity of AlbertaLasers

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