Yurchenko, V. and Ciydem, M. and Gradziel, Marcin and Murphy, J.Anthony (2020) Major reshaping of narrow beams by resonant multilayer structure. Optics Express, 28 (6). pp. 8211-8222. ISSN 1094-4087

Preview

Download (1MB) | Preview

Abstract

Major reshaping of electromagnetic MM-wave beams transmitted at resonant frequencies through high-quality multilayer structures is demonstrated. Beam reshaping emerges due to efficient excitation of intrinsic quasi-optical modes with complex spatial profiles by an incident beam. This leads to a significant increase of width and distortion of shape of transmitted beams, which grow with increasing likelihood of excitation of higher-order modes. The beam shape is extremely sensitive to imperfections of real structures and can become complex and asymmetric even at the normal-angle transmission of symmetric incident beams. The effect is of importance for the resonant MM-wave and THz spectroscopy of low-loss dielectric materials.

Item Type:	Article
Additional Information:	© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Keywords:	electromagnetic MM-wave beams; high-quality multilayer structures; resonant MM-wave; THz spectroscopy; low-loss dielectric materials;
Academic Unit:	Faculty of Science and Engineering > Experimental Physics
Item ID:	13769
Identification Number:	https://doi.org/10.1364/OE.386610
Depositing User:	Dr. Marcin Lukasz Gradziel
Date Deposited:	04 Jan 2021 17:22
Journal or Publication Title:	Optics Express
Publisher:	Optical Society of America
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

Repository Staff Only(login required)

Item control page

Downloads

Origin of downloads