Iterative improvement of shadowgraphic phase maps

Author

Pliakis, Dimitris ; Minardi, Stefano

Author_Institution

Dept. of Electron., Technol. Educ. Inst. of Crete, Chania, Greece

fYear

2009

fDate

14-19 June 2009

Firstpage

1

Lastpage

1

Abstract

This work demonstrates an iterative shadowgraphic method (ISM), which can eliminate diffraction blurring from shadowgraphically retrieved phase maps. The algorithm calculates iteratively wavefront corrections by solving the Poisson equation with a source term obtained from a reference shadowgram and an artificial shadowgram calculated from the approximated phase map obtained at the previous iteration. The convergence of ISM has been proved and several numerical tests have been performed to assess its performance.

Keywords

Poisson equation; convergence of numerical methods; image reconstruction; image retrieval; iterative methods; Poisson equation; algorithm convergence; approximated phase map; artificial shadowgram; diffraction blurring; iterative shadowgraphic method; numerical tests; phase map retrieval; shadowgraphic phase maps; wavefront corrections; wavefront reconstruction; Educational technology; Equations; Geometrical optics; Iterative algorithms; Iterative methods; Optical diffraction; Optical propagation; Optimized production technology; Phase detection; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on

Conference_Location

Munich

Print_ISBN

978-1-4244-4079-5

Electronic_ISBN

978-1-4244-4080-1

Type

conf

DOI

10.1109/CLEOE-EQEC.2009.5196305

Filename

5196305