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A unified derivation of the Terahertz spectra generated by photoconductors and diodes

Preu, Sascha (2014):
A unified derivation of the Terahertz spectra generated by photoconductors and diodes.
In: J. Infrared Milli Terahz Waves, pp. 998-1010, 35, [Online-Edition: http://dx.doi.org/10.1007/s10762-014-0096-6],
[Article]

Abstract

By a convolution approach for the spectra generated by photoconductive and photomixing THz emitters, the intrinsic response of the material can be separated from the spectrum of the optical pulse and that of any attached antenna. The spectrum turns out to be simply a product of the spectra of the individual components and can be calculated analytically. This result has impact on materials design and derivation of the optimum excitation conditions for photoconductors and photodiodes. Spectra of three technologically important devices, namely low-lifetime materials, semi-insulating materials and devices supporting ballistic transport, are calculated. The derived pulse shape is compared to experimental data.

Item Type: Article
Erschienen: 2014
Creators: Preu, Sascha
Title: A unified derivation of the Terahertz spectra generated by photoconductors and diodes
Language: English
Abstract:

By a convolution approach for the spectra generated by photoconductive and photomixing THz emitters, the intrinsic response of the material can be separated from the spectrum of the optical pulse and that of any attached antenna. The spectrum turns out to be simply a product of the spectra of the individual components and can be calculated analytically. This result has impact on materials design and derivation of the optimum excitation conditions for photoconductors and photodiodes. Spectra of three technologically important devices, namely low-lifetime materials, semi-insulating materials and devices supporting ballistic transport, are calculated. The derived pulse shape is compared to experimental data.

Journal or Publication Title: J. Infrared Milli Terahz Waves
Volume: 35
Divisions: 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics > Terahertz Systems Technology
18 Department of Electrical Engineering and Information Technology
18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics
Date Deposited: 19 Jun 2015 11:46
Official URL: http://dx.doi.org/10.1007/s10762-014-0096-6
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