Diffraction effects in the radiometry of coherent beams

D. J. Butler, R. Köhler, G. W. Forbes

    Research output: Contribution to journalArticlepeer-review

    18 Citations (Scopus)

    Abstract

    High-accuracy radiometry requires an optical beam in which all the light is contained within the radius of the smallest detector to be calibrated. We analyze a common configuration of the optical components used to prepare such a beam and show that diffraction rings are formed in the far field although the irradiance is zero along the limiting aperture’s edge. The beam profile is calculated and used to find the radius of the smallest detector that can be calibrated with this beam.

    Original languageEnglish
    Pages (from-to)2162-2166
    Number of pages5
    JournalApplied Optics
    Volume35
    Issue number13
    DOIs
    Publication statusPublished - 1 May 1996

    Keywords

    • Diffraction
    • Radiometry

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