Design and implementation of pipelined parallel architecture for fast Wavefront Correction of interferometric data

International Journal of Computer Trends and Technology (IJCTT)          
© 2016 by IJCTT Journal
Volume-31 Number-1
Year of Publication : 2016
Authors : M.Mohamed Ismail, M.Mohamed Sathik


M.Mohamed Ismail, M.Mohamed Sathik "Design and implementation of pipelined parallel architecture for fast Wavefront Correction of interferometric data". International Journal of Computer Trends and Technology (IJCTT) V31(1):6-12, January 2016. ISSN:2231-2803. Published by Seventh Sense Research Group.

Abstract -
In adaptive optics (AO) technology, the wave propagation occurs in the atmosphere which constitutes a media with random optical inhomogeneities caused by atmospheric turbulence. These can be corrected which enables the telescope to reach the diffraction limited image quality. The atmospheric turbulence induces temporal and spatial variations in the beam propagation. Therefore the analysis and mitigation of atmospheric turbulence effects on the quality of wavefront become significant. This paper addresses the development and adaptation of faster simulation algorithm of wavefront correction for interferometric data using pipelined parallel architecture. The complete simulation package of shearing interferometer based wavefront sensor for adaptive optics applications has been reported.

[1] Hardy, J.W., “Adaptive Optics for Astronomical Telescopes”, 1998.
[2] Julie A. Perreault, Thomas G. Bifano, B. Martin Levine and Mark N. Horenstein “Adaptive optics correction using microelectro- mechanical deformable mirrors”, Optical Engineering, 41(3) 561-566, March 2002.
[3] R.P. Grosso and M. Yellin., “The membrane mirror as an adaptive optical element”, .J. Opt. Soc. Am., 67:399{406, 1977.
[4] Saxena A.K, and Lancelot J.P, “Theoretical fringe profiles with crossed Babinet compensators in testing concave aspheric surfaces,” Appl. Opt. Vol. 21, No.22, 4030 – 4032 (1982).
[5] Saxena A.K, and Lancelot J.P, “Wavefront sensing and evaluation using two crossed Babinet compensators,” SPIE, 1121, “Interferometry „89” 41 – 43 (1990).
[6] Lancelot, J. P. (2007). “Wavefront Sensing For Adaptive Optics” Bangalore: PhD Thesis, Indian Institute of Astrophysics. [7] Noll, R.J., “Zernike polynomials and atmospheric turbulence” J. Opt. Soc. Am., Vol. 66, No.3, 207 – 211 (1976).
[8] Harbers G, P.J.Kunst and G.W.R Leibbrandt, “Analysis of lateral shearing interferograms by use of Zernike polynomials”, Appl.Opt. 35, No.31, 6162 – 6172 (1996). [9] Kingslake R, “Lens Design Fundamentals”, Acad. Press (1978).
[10] Malacara, D., “Optical Shop Testing”, 2nd Edn. John Wiley & Sons, (1992).
[11] B.J. Herman, L.A. Strugala, “Method for inclusion of low frequency contributions in numerical representation of atmospheric turbulence”, by P.B. Ulrich, E. Wilson. Propagation of high-energy laser beams through the earth‟s atmosphere, Proc. SPIE 1221, 183– 192 (1990).
[12] R.G. Lane, A. Glindermann, J.C. Dainty, “Simulation of a Kolmogorov phase screen”, Waves Random Media 2(3), 209–224 (1992).
[13] M.C. Motwani, M.C. Gadiya, R.C. Motwani.“Survey of Image Denoising Techniques”, Proceedings of GSPx, Santa Clara, CA, 2004.
[14] Novák J.: Automatic Method for Detection of Interference Fringes. Proceedings – Research Activities of Physical Departments of Civil Engineering Faculties in the Czech and Slovak, Republics, Brno 2001.
[15] Kasper, M., Looze D., Hippler S., et al. “ALFA: Adaptive Optics for the Calar Alto Observatory Optics, Control Systems, and Performance”, 2000, Exp. Astron., 10, 49.

Shearing Interferometer, Parallel Processing, Deformable Mirror and Phase Screen