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Hollow Fiber Transmits CO2 Laser Radiation

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Researchers at Massachusetts Institute of Technology in Cambridge have produced wavelength-scalable hollow optical fiber that can transmit enough of the output of a 25-W CO2 laser to burn holes in paper and PES film. Even with maximum laser power densities approaching 300 W/cm2, there was no observable fiber damage as long as there was optimum coupling of the beam into the fiber core. As described in the Dec. 12 issue of Nature, the scientists lined the fiber with an omnidirectional dielectric mirror and used multiple alternating submicron-thick layers of high-refractive-index glass and...Read full article

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    Published: January 2003
    As We Go To PressBreaking Newsfiber opticsomnidirectional dielectric mirrorPresstime Bulletinwavelength-scalable hollow optical fiberLasers

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