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Proceedings Paper

Retrieving the refractive index profile of a holographic grating by diffraction experiments
Author(s): Martin Fally; Jürgen Klepp; Mostafa A. Ellabban; Helmut Eckerlebe; Philipp K. Pranzas; Jinxin Guo; Yasuo Tomita
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Paper Abstract

It is well known that in standard diffaction experiments only the amplitudes of structural Fourier components are recovered but phase information is lost. This problem is known as the ’phase problem’ in crystallography. In this contribution, we point out how the phase problem of diffraction can be solved in some particular cases by employing multi-wave interference. In the experimental situation described here, we were able to determine the form of the refractive-index profile of a 1-D nanocomposite holographic grating by using a multi-wave coupling analysis of the measured angular dependence of the diffraction efficiencies for a number of diffraction orders.

Paper Details

Date Published: 23 April 2019
PDF: 6 pages
Proc. SPIE 11030, Holography: Advances and Modern Trends VI, 110300I (23 April 2019); doi: 10.1117/12.2527317
Show Author Affiliations
Martin Fally, Univ. Wien (Austria)
Jürgen Klepp, Univ. Wien (Austria)
Mostafa A. Ellabban, Tanta Univ. (Egypt)
Taibah Univ. (Saudi Arabia)
Helmut Eckerlebe, Helmholtz-Zentrum Geesthacht (Germany)
Philipp K. Pranzas, Helmholtz-Zentrum Geesthacht (Germany)
Jinxin Guo, The Univ. of Electro-Communications (Japan)
Yasuo Tomita, The Univ. of Electro-Communications (Japan)

Published in SPIE Proceedings Vol. 11030:
Holography: Advances and Modern Trends VI
Antonio Fimia; Miroslav Hrabovský; John T. Sheridan, Editor(s)

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