Class
Article
College
College of Science
Department
Physics Department
Faculty Mentor
TC Shen
Presentation Type
Poster Presentation
Abstract
Photonic crystals (PCs) are novel constructions that enable a wide range of electromagnetic phenomena and applications. Specifically, PCs are periodic dielectric structures that frequently exhibit extraordinary properties such as a photonic bandgap wherein the lattice prohibits the propagation of certain EM waves and negative index of refraction where the refracted wave bends in the same side as the incident wave. We constructed multiple photonic crystals consisting of aluminum and acetal rods arranged into 2D lattices in air. The lattice constant was be 1.25 in and we used microwaves of 10.5 GHz. By measuring the output intensity of microwaves passing through the 2D crystals, we observe both positive and negative refractions simultaneously, and scattering effects leading to high transmission. Our work demonstrates that PCs can be studied by an existing microwave source/detector setup. Presentation Time: Thursday, 9-10 a.m.
Location
Logan, UT
Start Date
4-12-2021 12:00 AM
Included in
Study of Photonic Crystals by Microwaves
Logan, UT
Photonic crystals (PCs) are novel constructions that enable a wide range of electromagnetic phenomena and applications. Specifically, PCs are periodic dielectric structures that frequently exhibit extraordinary properties such as a photonic bandgap wherein the lattice prohibits the propagation of certain EM waves and negative index of refraction where the refracted wave bends in the same side as the incident wave. We constructed multiple photonic crystals consisting of aluminum and acetal rods arranged into 2D lattices in air. The lattice constant was be 1.25 in and we used microwaves of 10.5 GHz. By measuring the output intensity of microwaves passing through the 2D crystals, we observe both positive and negative refractions simultaneously, and scattering effects leading to high transmission. Our work demonstrates that PCs can be studied by an existing microwave source/detector setup. Presentation Time: Thursday, 9-10 a.m.