Mohr, Till (2018)
Terahertz homodyne self-mixing and its application to tomographic imaging.
Technische Universität Darmstadt
Ph.D. Thesis, Primary publication
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Item Type: | Ph.D. Thesis | ||||
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Type of entry: | Primary publication | ||||
Title: | Terahertz homodyne self-mixing and its application to tomographic imaging | ||||
Language: | English | ||||
Referees: | Elsäßer, Prof. Dr. Wolfgang ; Thomas, Prof. Dr. Walther | ||||
Date: | 5 December 2018 | ||||
Place of Publication: | Darmstadt | ||||
Date of oral examination: | 10 January 2018 | ||||
Abstract: | Since the first mention of the “Terahertz-gap” by H. Rubens and E. F. Nicholes more than 100 years ago, this frequency region between 0.1 and 10THz is still of considerable interest. This region stands out by unique properties like spectral fingerprints of many molecules, transparency of plastics and paper and its non-ionizing nature, which enable a broad spectrum of applications. Due to the efforts in this field of research, nowadays a plurality of methods for the generation and detection of terahertz radiation is available. In combination with well-established optical systems like the fs-pulse laser or single frequency lasers, a photoconductive antenna (PCA) allows the generation and phase sensitive detection of spectrally broad terahertz pulses or single frequency continuous wave terahertz radiation, respectively. Conventionally, one PCA is used for the generation and another PCA is necessary for the detection of the terahertz radiation. In this publication a new concept combining the generation and phase sensitive detection of terahertz radiation in a single PCA is introduced. With this concept a compact terahertz tomographic system is realized and experimental results are discussced on the basis of theoretical investigations. |
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URN: | urn:nbn:de:tuda-tuprints-73626 | ||||
Classification DDC: | 500 Science and mathematics > 530 Physics | ||||
Divisions: | 05 Department of Physics 05 Department of Physics > Institute of Applied Physics 05 Department of Physics > Institute of Applied Physics > Semiconductor Optics Group |
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Date Deposited: | 19 Dec 2018 10:59 | ||||
Last Modified: | 09 Jul 2020 02:05 | ||||
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/7362 | ||||
PPN: | 440122562 | ||||
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