System Characterization Using A Lateral Shearing Interferometer

Michael K. Giles; James L. Jernigan; Donald P. Murphy

doi:10.1117/12.976110

20 November 1985 System Characterization Using A Lateral Shearing Interferometer

Michael K. Giles, James L. Jernigan, Donald P. Murphy

Proceedings Volume 0540, Southwest Conf on Optics '85; (1985) https://doi.org/10.1117/12.976110
Event: 1985 Albuquerque Conferences on Optics, 1985, Albuquerque, United States

Abstract

A lateral shearing interferometer similar to that described by Rimmer and WyantI was built and used to characterize an off-axis collimator/beam combiner system. Reduction of the interferogram data was accomplished by using an image processing system to digitize the fringe data convert the two orthogonal slope interferograms to a single wavefront interferogram, and then compute the system optical transfer function (nTP). The software was derived from a version of the FRINGE code (developed at the University of Arizona) modified to run on a VAX 11/780--DeAnza 1P8500 image processing system. The double crossed gratings (420 line pairs per millimeter) used to obtain orthogonal interferograms of the wavefront slope were produced using a technique based o Lloyd's mirror. This paper presents the technique used to produce the gratings, the configuration of the interferometer, and the results obtained (both interferometric and reduced OTF data).

Citation Download Citation

Michael K. Giles, James L. Jernigan, and Donald P. Murphy "System Characterization Using A Lateral Shearing Interferometer", Proc. SPIE 0540, Southwest Conf on Optics '85, (20 November 1985); https://doi.org/10.1117/12.976110

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