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https://hdl.handle.net/2440/70664
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Type: | Conference paper |
Title: | Near-field & far-field modelling of a sub-wavelength THz source |
Author: | Lin, H. Fumeaux, C. Fischer, B. Abbott, D. |
Citation: | IRMMW-THz 2011: 36th International Conference on Infrared, Millimeter, and Terahertz Waves: pp.1-2 |
Publisher: | IEEE |
Publisher Place: | USA |
Issue Date: | 2011 |
Series/Report no.: | International Conference on Infrared Millimeter and Terahertz Waves |
ISBN: | 9781457705090 |
ISSN: | 2162-2027 |
Conference Name: | International Conference on Infrared, Millimeter and Terahertz Waves (36th : 2011 : Houston, Texas) |
Editor: | Koch, M. |
Statement of Responsibility: | Hungyen Lin, Christophe Fumeaux, Bernd Michael Fischer, and Derek Abbott |
Abstract: | The THz emission point on a nonlinear electro-optical crystal for generating broadband THz radiation is modeled as a radiating Gaussian aperture. With the wavelengths of the infrared pump beam being much smaller than the wavelength components of the generated THz pulse, a THz sub-wavelength radiating aperture with Gaussian profile is effectively created. This paper investigates this general modelling approach for focused THz radiation generation in electro-optical crystals. Different implementations are employed for the near- and far-field regime. While a numerical approach is required to characterize near-field intensity distributions, a semi-analytical model is sufficient for far-field considerations. The near-field study has ramifications in THz near-field focused beam techniques while far-field investigations elucidate the radiation pattern shape and hence the detectable SNR. |
Rights: | Copyright 2011 IEEE |
DOI: | 10.1109/irmmw-THz.2011.6104774 |
Published version: | http://dx.doi.org/10.1109/irmmw-thz.2011.6104774 |
Appears in Collections: | Aurora harvest 5 Electrical and Electronic Engineering publications |
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