Whale, Mark and Trappe, Neil and Murphy, J.Anthony and Withington, Stafford (2007) Analysis of standing waves in millimetre-wave optics. In: 2007 Joint 32nd International Conference on Infrared and Millimeter Waves and the 15th International Conference on Terahertz Electronics. IEEE. ISBN 9781424414383

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Abstract

In this paper, we expand a theoretical framework for modelling standing waves in millimeter/submillimetre optical systems. Standing waves or multiple reflections have been traditionally difficult to model but this analytical method proves to be very versatile in dealing with reflections between typical quasioptical components such as lenses, apertures and mirrors. Using a full multi moded description of the feed horn (typically a corrugate horn), which is then transformed to equivalent free space Gaussian modes, a full mode matching scattering matrix approach is utilized to analyze any optical path/element, in which track is kept of both the backward and forward propagating components of the fields. We present an analysis of the reflected power from complicated cascaded optical apertures in a situation similar to a stray light baffle. Interesting constructive and destructive interference conditions can be observed from these structures and can be uniquely modelled with the presented theoretical technique.

Item Type:	Book Section
Additional Information:	The author of this paper would like to acknowledge the financial support of Science Foundation Ireland (SFI) through a Research Frontiers Grant for this research.
Keywords:	Gaussian beam mode analysis; scattering matrix; quasioptical system; standing waves;
Academic Unit:	Faculty of Science and Engineering > Experimental Physics
Item ID:	9857
Identification Number:	https://doi.org/10.1109/ICIMW.2007.4516742
Depositing User:	Dr. Neil Trappe
Date Deposited:	31 Aug 2018 14:02
Publisher:	IEEE
Refereed:	Yes
Funders:	Science Foundation Ireland (SFI)
URI:	https://ieeexplore.ieee.org
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

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