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Optical Engineering

Surface registration-based stitching of quasi-planar free-form wavefronts
Author(s): Shanyong Chen; Yifan Dai; Shengyi Li; Feng Shi; Yanglin Peng
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Paper Abstract

Due to the lateral alignment incapability of planar subaperture stitching algorithms, subaperture testing (SAT) is still challenging especially for quasi-planar free-form wavefronts featured with vertical fluctuation of small amplitude and high frequency. To avoid the lateral misalignment-induced error, we propose a stitching algorithm with quasi-planar free-form surface registration. The subapertures are considered as three-dimensional point sets acquired from a free-form surface instead of the error surface superposed on a plane. Then all subapertures are stitched together by minimizing the deviations among overlaps with regard to the free-form surface. Finally cross-test simulations and experiments are presented to show the effect of error reductions in SAT of large continuous phase plate wavefronts, verified by the full-aperture testing with a large-aperture interferometer.

Paper Details

Date Published: 11 June 2012
PDF: 10 pages
Opt. Eng. 51(6) 063605 doi: 10.1117/1.OE.51.6.063605
Published in: Optical Engineering Volume 51, Issue 6
Show Author Affiliations
Shanyong Chen, National Univ. of Defense Technology (China)
Yifan Dai, National Univ. of Defense Technology (China)
Shengyi Li, National Univ. of Defense Technology (China)
Feng Shi, National Univ. of Defense Technology (China)
Yanglin Peng, National Univ. of Defense Technology (China)

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