Please use this identifier to cite or link to this item:
|Scopus||Web of Science®||Altmetric|
|Title:||Near-field & far-field modelling of a sub-wavelength THz source|
|Citation:||IRMMW-THz 2011: 36th International Conference on Infrared, Millimeter, and Terahertz Waves: pp.1-2|
|Series/Report no.:||International Conference on Infrared Millimeter and Terahertz Waves|
|Conference Name:||International Conference on Infrared, Millimeter and Terahertz Waves (36th : 2011 : Houston, Texas)|
|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|
|Appears in Collections:||Electrical and Electronic Engineering publications|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.