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Proceedings Paper

Design of a spatially phase shifted self-referencing interferometer wave front sensor
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Paper Abstract

Over the last few years the Starfire Optical Range, Air Force Research Laboratory, Kirtland AFB, has been developing the self-referencing interferometer (SRI) wave front sensor (WFS). The objective of this project has been to demonstrate and evaluate the performance advantages the SRI WFS provides over conventional WFSs, particularly in applications requiring laser propagation in strong scintillation. The initial SRI prototypes relied on a temporal phase shifting approach to produce and capture the required interference images for wave front reconstruction. This approach simplified the initial development by minimizing issues related to detector calibration and the co-alignment of beams. In this paper we discuss the next step in our SRI development efforts and present the design of a spatial phase shifting SRI WFS. The design allows all four interference images- with respective phase shifts of 0, π/2, π, and 3π/2 between the reference and signal beams- to be captured simultaneously on a single camera. Initial results from a laboratory demonstration of the design are shown.

Paper Details

Date Published: 7 September 2006
PDF: 12 pages
Proc. SPIE 6306, Advanced Wavefront Control: Methods, Devices, and Applications IV, 63060K (7 September 2006); doi: 10.1117/12.682479
Show Author Affiliations
Troy A. Rhoadarmer, Air Force Research Lab. (United States)
Laura M. Klein, Air Force Research Lab. (United States)


Published in SPIE Proceedings Vol. 6306:
Advanced Wavefront Control: Methods, Devices, and Applications IV
Michael K. Giles; John D. Gonglewski; Richard A. Carreras, Editor(s)

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