ELECTROMAGNETIC WAVES REFLECTION ON THE BOUNDARY OF CHIRAL-NONCHIRAL MATERI

• Main Author: Prastika, Yuni
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/52950
• Institution: Institut Teknologi Bandung

Electromagnetic waves are the result of a combination of electric and magnetic fields that can propagate in vacuum as well as in other media which has a specific response that is parameterized by the permittivity value of the material concerned. One of the characteristic properties of electromagnetic waves is the oscillation direction behavior of the associated fields which is called polarization. Polarization of the electromagnetic waves can be classified as Linear Polarization and Elliptical Polarization. On the other hand, there are materials whose responses can cause the polarization of the electromagnetic waves that pass through them to change, one of which is the Chiral material. Chiral material is a material that cannot be superposed on its mirror image by any combination of rotations and translations. This geometric property is called Chirality, and one response is that produces different effects on electromagnetic waves with a certain polarization that impinge on it. This final project will discuss the formulation of electromagnetic waves in the context of chiral material responses. In particular, the electromagnetic wave reflection at the boundary of two different mediums, chiral and non-chiral. The reflection coefficient value r will be calculated through a 4x4 matrix and the r value is split into four parts. There is a new phenomenon in the reflection, namely the appearance of a different direction of polarization compared to that of the incident wave.