Publication
Title
Light propagation in stratified media with soft interfaces
Author
Abstract
The propagation of light through materials in which the density of charge carriers varies smoothly on a scale smaller than or comparable to the wavelength requires a description that goes beyond the commonly used Fresnel equations. We propose a method to solve Maxwell's equations in such a way that any linear response theory for the bulk material can be combined with a given smooth density profile for the (free or bound) charge carriers. This method is implemented for linearly polarized monochromatic light impinging on inhomogeneous multilayer systems, leading to a fast algorithm that yields reflectance and transmittance for such systems. We apply our algorithm to investigate the difference in optical response between smooth interfaces and abrupt interfaces in stratified systems where the materials can have complex bulk permittivities, and find that the smoothening of the interface on a wavelength scale significantly reduces reflection in favor of absorption. This result is of importance to current experiments that aim to detect metallic hydrogen and deuterium films using their optical response. Our results show that for a correct interpretation of these experiments it is important to consider the smoothness of the density profile of the metallic layer. Also, for nonabsorbing layers, a smooth, rather than abrupt transition, can have an important impact on the design of optical filters.
Language
English
Source (journal)
Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
Publication
Lancaster, Pa : 2016
ISSN
1098-0121 [print]
1550-235X [online]
Volume/pages
93:15(2016), 6 p.
Article Reference
155129
ISI
000374297200004
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
[E?say:metaLocaldata.cgzprojectinf]
Quantum turbulence in atomic and solid state Bose-Einstein condensates.
Quantum simulation of polaronic effects in quantum gases.
Nonlinear Transport of the Wigner Solid on a Superfluid 4He in a Quasi-One- Dimensional Channel.
Superfluidity and superconductivity in multicomponent quantum condensates.
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 22.04.2016
Last edited 18.11.2017
To cite this reference