Mohr, Till (2018)
Terahertz homodyne self-mixing and its application to tomographic imaging.
Technische Universität Darmstadt
Dissertation, Erstveröffentlichung
Kurzbeschreibung (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.
Typ des Eintrags: | Dissertation | ||||
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Erschienen: | 2018 | ||||
Autor(en): | Mohr, Till | ||||
Art des Eintrags: | Erstveröffentlichung | ||||
Titel: | Terahertz homodyne self-mixing and its application to tomographic imaging | ||||
Sprache: | Englisch | ||||
Referenten: | Elsäßer, Prof. Dr. Wolfgang ; Thomas, Prof. Dr. Walther | ||||
Publikationsjahr: | 5 Dezember 2018 | ||||
Ort: | Darmstadt | ||||
Datum der mündlichen Prüfung: | 10 Januar 2018 | ||||
URL / URN: | https://tuprints.ulb.tu-darmstadt.de/7362 | ||||
Kurzbeschreibung (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 | ||||
Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik | ||||
Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Angewandte Physik 05 Fachbereich Physik > Institut für Angewandte Physik > Halbleiter Optik |
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Hinterlegungsdatum: | 23 Dez 2018 20:55 | ||||
Letzte Änderung: | 23 Dez 2018 20:55 | ||||
PPN: | |||||
Referenten: | Elsäßer, Prof. Dr. Wolfgang ; Thomas, Prof. Dr. Walther | ||||
Datum der mündlichen Prüfung / Verteidigung / mdl. Prüfung: | 10 Januar 2018 | ||||
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