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Proceedings Paper

Optical correction using fourier transform heterodyne
Author(s): Bryan E. Laubscher; Robert J. Nemzek; Bradly J. Cooke; Nicholas L. Olivas; Anders M. Jorgensen; J. Allyn Smith; Nina R. Weisse-Bernstein
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Paper Abstract

In this paper we briefly present the theory of Fourier Transform Heterodyne (FTH), describe past verification experiments carried out, and discuss the experiment designed to use this new imaging technology to perform optical correction. FTH uses the scalar projection of a reference laser beam and a test laser beam onto a single element detector. The complex current in the detector yields the coefficient of the scalar projection. By projecting a complete orthonormal basis set of reference beams onto the test beam, the amplitude and phase of the test beam can be measured, allowing the reconstruction of the phasefront of the image. Experiments to determine this technique's applicability to optical correction and optical self-correction are continuing. Applications of this technique beyond optical correction include adaptive optics; interferometry; and active, high background, low signal imaging.

Paper Details

Date Published: 23 August 2005
PDF: 9 pages
Proc. SPIE 5896, Unconventional Imaging, 58960E (23 August 2005); doi: 10.1117/12.620138
Show Author Affiliations
Bryan E. Laubscher, Los Alamos National Lab. (United States)
Robert J. Nemzek, Los Alamos National Lab. (United States)
Bradly J. Cooke, Los Alamos National Lab. (United States)
Nicholas L. Olivas, Los Alamos National Lab. (United States)
Anders M. Jorgensen, Los Alamos National Lab. (United States)
J. Allyn Smith, Los Alamos National Lab. (United States)
Nina R. Weisse-Bernstein, Los Alamos National Lab. (United States)


Published in SPIE Proceedings Vol. 5896:
Unconventional Imaging
Victor L. Gamiz; Paul S. Idell, Editor(s)

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