Integrated diffractive shearing interferometry for adaptive wavefront sensing
Applied Optics, Vol. 47, Issue 35, pp. 6666-6674 (2008)
http://dx.doi.org/10.1364/AO.47.006666
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Abstract
We present theory, design, and preliminary experimental studies for a compact wavefront sensor based on lateral shearing interferometry using a binary phase grating, image sensor, and Fourier-based processing. The integrated system places a diffractive element directly onto an image sensor to generate interference fringes within overlapping diffraction orders. The shearing ratio and the interferogram signal-to-noise ratio directly affect the reconstruction accuracy of wavefronts with differing spatial variations. Optimal shearing parameters associated with the autocorrelation of the input encourage placing a spatial light modulator as the diffractive element allowing adaptive wavefront sensing. Experimental results from a fixed-grating system are presented as well as requirements for next-generation adaptive systems.
© 2008 Optical Society of America
OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(110.3175) Imaging systems : Interferometric imaging
(070.6120) Fourier optics and signal processing : Spatial light modulators
ToC Category:
Integrated Optics
History
Original Manuscript: July 3, 2008
Revised Manuscript: October 1, 2008
Manuscript Accepted: November 4, 2008
Published: December 8, 2008
Citation
Jason H. Karp, Trevor K. Chan, and Joseph E. Ford, "Integrated diffractive shearing interferometry for adaptive wavefront sensing," Appl. Opt. 47, 6666-6674 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-35-6666
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