Experimental determination of nanocomposite grating structures by light- and neutron-diffraction in the multi-wave-coupling regime

Autor(en)

Martin Fally, Yasuo Tomita, Antonio Fimia, Roque F. Madrigal, Jinxin Guo, Joachim Kohlbrecher, Jürgen Klepp

Abstrakt

We experimentally demonstrate how to accurately retrieve the refractive index profile of photonic structures by standard diffraction experiments and use of the rigorous coupled-wave analysis in the multi-wave coupling regime, without the need for taking any auxiliary data. In particular, we show how the phases of the Fourier components of a periodic structure can be fully recovered by deliberately choosing a probe wavelength of the diffracting radiation much smaller than the lattice constant of the structure. In the course of our demonstration, we accurately determine the slight asymmetry of the structure of nanocomposite phase gratings by light and neutron diffraction measurements. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Organisation(en)

Physik Funktioneller Materialien

Externe Organisation(en)

The University of Electro-Communications, Universidad Miguel Hernández de Elche, Eidgenössische Technische Hochschule Zürich, Paul Scherrer Institute

Journal

Optics Express

Band

29

Seiten

16153-16163

Anzahl der Seiten

11

ISSN

1094-4087

DOI

https://doi.org/10.1364/OE.424233

Publikationsdatum

05-2021

Peer-reviewed

Ja

ÖFOS 2012

103021 Optik

Schlagwörter

ASJC Scopus Sachgebiete

Atomic and Molecular Physics, and Optics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/0492554f-890e-474d-9b0a-ae19c7f03fe3