Preu, Sascha (2014)
A unified derivation of the Terahertz spectra generated by photoconductors and diodes.
In: J. Infrared Milli Terahz Waves, 35
Article, Bibliographie
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 |
| Type of entry: | Bibliographie |
| Title: | A unified derivation of the Terahertz spectra generated by photoconductors and diodes |
| Language: | English |
| Date: | 2014 |
| Journal or Publication Title: | J. Infrared Milli Terahz Waves |
| Volume of the journal: | 35 |
| URL / URN: | http://dx.doi.org/10.1007/s10762-014-0096-6 |
| 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. |
| Divisions: | 18 Department of Electrical Engineering and Information Technology 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) > Terahertz Devices and Systems 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) > Terahertz Systems Technology |
| Date Deposited: | 19 Jun 2015 11:46 |
| Last Modified: | 10 Dec 2021 07:13 |
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