STP1015: Simple Accurate Inversion of Knife-Edge Data from Radially Symmetric Laser Beams

    O'Connell, RM
    University of Missouri, Columbia, Missouri

    Vogel, RA
    University of Missouri, Columbia, Missouri

    Pages: 7    Published: Jan 1988


    Abstract

    The intensity profile of a radially symmetric beam is shown to be related to the inverse Abel transform of knife-edge-scan data. Two inversion algorithms, previously applied to problems in plasma diagnostics, are described and applied to knife-edge data from a confocal unstable resonator laser. The resulting profiles are shown to be in good agreement with each other but significantly different from the profile obtained by assuming the beam to be approximately Gaussian. As a beneficial consequence, the results are shown to imply a significantly higher laser damage threshold for polymethylmethacrylate than previously reported.

    Keywords:

    beam profiles, inverse Abel transform, knife-edge scan, laser damage threshold, polymethylmethacrylate


    Paper ID: STP18724S

    Committee/Subcommittee: F01.02

    DOI: 10.1520/STP18724S


    CrossRef ASTM International is a member of CrossRef.