STP1015

    Multifacet, Metal Mirror Design for Extreme-Ultraviolet and Soft X-Ray Free-Electron Laser Resonators

    Published: Jan 1988


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    Abstract

    Resonator mirrors with reflectance greater than ~40% are required if free-electron laser (FEL) oscillators are to be extended to wavelengths below 100 nm. The principle of total-external reflection has been used to design multifacet mirrors of several metal films that surpass this requirement between 10 and 100 nm. These reflectors have high reflectance over a relatively broad band which suits well the inherent FEL wavelength tunability. The practical limitations to achieving and maintaining high reflectance include oxide- and carbon-contamination, scattering, and surface-plasmon absorption.

    Keywords:

    aluminum films, carbon contamination, extreme-ultraviolet reflectors, free-electron lasers, metal reflectors, multifacet reflectors, oxide contamination, rhodium films, silicon carbon, silicon films, soft x-ray reflectors


    Author Information:

    Newnam, BE
    Los Alamos National Laboratory, Los Alamos, New Mexico


    Paper ID: STP18753S

    Committee/Subcommittee: F01.02

    DOI: 10.1520/STP18753S


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