Effective medium approximation based interpretation for Mueller matrix spectra of polydimethylsiloxane gratings
- 1 February 2021
- journal article
- research article
- Published by IOP Publishing in Journal of Optics
- Vol. 23 (2), 025403
- https://doi.org/10.1088/2040-8986/abe35d
Abstract
Dielectric corrugated gratings are of considerable interest due to their applications in acousto-optics, quantum electronics, integrated optics, spectroscopy, and holography integrated optics. Rigorous coupled-wave analysis has been widely used for the analysis of dielectric gratings. However, this approach is not only time-consuming and computer intensive but it also does not really promote the physical understanding of the origin of the observed optical behavior. Here, we use Mueller matrix (MM) spectroscopic ellipsometry to systematically study the sinusoidal polydimethylsiloxane grating. We correlate the observed polarization mixing in the Mueller matrix to the underlying physical origin using the physics-based approach. The calculated MM contour plots obtained from a biaxial Bruggemann effective medium approximation model are completed by the presence of Rayleigh-Woods anomalies. The roles of optical interference, geometric anisotropy, and diffraction orders are respectively identified by their different dispersion behavior, with their interactions and couplings highlighted. Such a straightforward procedure provides a new method for analyzing dielectric gratings, which requires considerably less computer power and is directly linked to the physical interpretations.Keywords
Funding Information
- China Postdoctoral Science Foundation (2019M662601)
- National Key Research and Development Plan (2017YFF0204705)
- National Natural Science Foundation of China (51525502)
This publication has 30 references indexed in Scilit:
- Useful Mueller matrix symmetries for ellipsometryThin Solid Films, 2014
- Periodic Nanostructures: Spatial Dispersion Mimics ChiralityPhysical Review Letters, 2011
- Profile characterization of diffraction gratings using angle-resolved polarimetric measurementsEPJ Web of Conferences, 2010
- Depolarizing Mueller matrices: how to decompose them?Physica Status Solidi (a), 2008
- Particle shape effects on the effective permittivity of anisotropic or isotropic media consisting of aligned or randomly oriented ellipsoidal particlesWater Resources Research, 2000
- On the effective medium theory of subwavelength periodic structuresJournal of Modern Optics, 1996
- Interpretation of Mueller matrices based on polar decompositionJournal of the Optical Society of America A, 1996
- Stable implementation of the rigorous coupled-wave analysis for surface-relief gratings: enhanced transmittance matrix approachJournal of the Optical Society of America A, 1995
- Optimal design for antireflective tapered two-dimensional subwavelength grating structuresJournal of the Optical Society of America A, 1995
- Optical Properties of Granular Silver and Gold FilmsPhysical Review B, 1973