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Frequency Swept Measurements of Coherent Diffraction Patterns

Markus Duelli, David L. Hill, and Robert W. Cohn
The ElectroOptics Research Institute
Univ. of Louisville, Louisville, Ky.

Abstract

            Interference fringes arising from multiple reflections can significantly alter the diffraction patterns of diffractive optical elements. One way to reduce interference effects is by time-integrating the diffraction pattern while frequency sweeping the laser source. This method is especially useful when it is not possible to remove the cover glass from the observation camera.

M. Duelli, D. L. Hill and R. W. Cohn, "Frequency Swept Measurements of Coherent Diffraction Patterns," Engineering & Laboratory Notes, 9(2), 3-5. (February 1998)

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