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https://hdl.handle.net/2440/62034
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DC Field | Value | Language |
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dc.contributor.author | Lin, H. | - |
dc.contributor.author | Fumeaux, C. | - |
dc.contributor.author | Fischer, B. | - |
dc.contributor.author | Abbott, D. | - |
dc.date.issued | 2010 | - |
dc.identifier.citation | Optics Express, 2010; 18(17):17672-17683 | - |
dc.identifier.issn | 1094-4087 | - |
dc.identifier.issn | 1094-4087 | - |
dc.identifier.uri | http://hdl.handle.net/2440/62034 | - |
dc.description.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 comprehensively investigates Gaussian apertures in focused THz radiation generation in electro-optical crystals and illustrates the breakdown of the paraxial approximation at low THz frequencies. The findings show that the shape of the radiation pattern causes a reduction in detectable THz radiation and hence contributes significantly to low signal-to-noise ratio in THz radiation generation. Whilst we have demonstrated the findings on optical rectification in this paper, the model may apply without a loss of generality to other types of apertures sources in THz radiation generation. | - |
dc.description.statementofresponsibility | Hungyen Lin, Christophe Fumeaux, Bernd M. Fischer, and Derek Abbott | - |
dc.language.iso | en | - |
dc.publisher | Optical Soc Amer | - |
dc.rights | © 2010 Optical Society of America | - |
dc.source.uri | http://dx.doi.org/10.1364/oe.18.017672 | - |
dc.subject | Normal Distribution | - |
dc.subject | Spectrum Analysis | - |
dc.subject | Infrared Rays | - |
dc.subject | Models, Theoretical | - |
dc.subject | Fiber Optic Technology | - |
dc.subject | Terahertz Imaging | - |
dc.subject | Crystallization | - |
dc.subject | Equipment Design | - |
dc.title | Modelling of sub-wavelength THz sources as Gaussian apertures | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1364/OE.18.017672 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Fumeaux, C. [0000-0001-6831-7213] | - |
dc.identifier.orcid | Abbott, D. [0000-0002-0945-2674] | - |
Appears in Collections: | Aurora harvest 5 Electrical and Electronic Engineering publications |
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