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Modelling of sub-wavelength THz sources as Gaussian apertures

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Modelling of sub-wavelength THz sources as Gaussian apertures. / Lin, Hungyen; Fumeaux, Christophe; Fischer, Bernd M. et al.
In: Optics Express, Vol. 18, No. 17, 2010, p. 17672-17683.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Lin, H, Fumeaux, C, Fischer, BM & Abbott, D 2010, 'Modelling of sub-wavelength THz sources as Gaussian apertures', Optics Express, vol. 18, no. 17, pp. 17672-17683. https://doi.org/10.1364/OE.18.017672

APA

Lin, H., Fumeaux, C., Fischer, B. M., & Abbott, D. (2010). Modelling of sub-wavelength THz sources as Gaussian apertures. Optics Express, 18(17), 17672-17683. https://doi.org/10.1364/OE.18.017672

Vancouver

Lin H, Fumeaux C, Fischer BM, Abbott D. Modelling of sub-wavelength THz sources as Gaussian apertures. Optics Express. 2010;18(17):17672-17683. doi: 10.1364/OE.18.017672

Author

Lin, Hungyen ; Fumeaux, Christophe ; Fischer, Bernd M. et al. / Modelling of sub-wavelength THz sources as Gaussian apertures. In: Optics Express. 2010 ; Vol. 18, No. 17. pp. 17672-17683.

Bibtex

@article{7b960b7a14b04e61879c75b8cb3e1424,
title = "Modelling of sub-wavelength THz sources as Gaussian apertures",
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 break-down 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.",
author = "Hungyen Lin and Christophe Fumeaux and Fischer, {Bernd M.} and Derek Abbott",
year = "2010",
doi = "10.1364/OE.18.017672",
language = "English",
volume = "18",
pages = "17672--17683",
journal = "Optics Express",
issn = "1094-4087",
publisher = "Optical Society of American (OSA)",
number = "17",

}

RIS

TY - JOUR

T1 - Modelling of sub-wavelength THz sources as Gaussian apertures

AU - Lin, Hungyen

AU - Fumeaux, Christophe

AU - Fischer, Bernd M.

AU - Abbott, Derek

PY - 2010

Y1 - 2010

N2 - 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 break-down 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.

AB - 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 break-down 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.

U2 - 10.1364/OE.18.017672

DO - 10.1364/OE.18.017672

M3 - Journal article

VL - 18

SP - 17672

EP - 17683

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 17

ER -