Zobus, Yannik (2023)
Design and Implementation of a High-Contrast, Millijoule-Level Ultrafast Optical Parametric Amplifier for High-Intensity Lasers.
Technische Universität Darmstadt
doi: 10.26083/tuprints-00024200
Dissertation, Erstveröffentlichung, Verlagsversion
Kurzbeschreibung (Abstract)
The objective of this work was the development of a laser module to improve the temporal contrast of high-intensity laser systems and its implementation at the high-power laser PHELIX at the GSI Helmholtzzentrum für Schwerionenforschung GmbH in Darmstadt. By improving the temporal contrast, experiments with laser-plasma interaction under extreme peak intensities should be made possible without disturbing or destroying the target before the arrival of the main pulse. In the frame of this work, I have therefore developed an ultrafast optical parametric amplifier (uOPA), which enables high-temporal-contrast amplification of short laser pulses up to the millijoule range and can thus replace subsequent contrast-degrading amplifier systems. In addition to reducing amplified spontaneous emission, the occurrence of pre-pulses can also be prevented. I have additionally developed a dedicated pump module for this amplifier, which can be used in a wide spectral range around the central wavelength of 1 μm and thereby can be implemented on various laser systems as a pump laser for uOPA systems. Thus, in addition to the high-contrast amplifier for the Nd:glass laser system PHELIX, I have built a second uOPA module for use in the diode-pumped Yb:CaF2 laser system PENELOPE. I implemented the module on the high-power PHELIX laser as part of this work, which successfully replaced an amplifier, which generated intense pre-pulses, in the amplification chain. This allowed me to lower the pre-pulse contrast at PHELIX by nearly three orders of magnitude to a contrast level of 6.2·10⁻¹¹, keeping the pre-pulse intensity, even for the highest possible intensity at PHELIX, below 100 GW/cm².
| Typ des Eintrags: | Dissertation | ||||
|---|---|---|---|---|---|
| Erschienen: | 2023 | ||||
| Autor(en): | Zobus, Yannik | ||||
| Art des Eintrags: | Erstveröffentlichung | ||||
| Titel: | Design and Implementation of a High-Contrast, Millijoule-Level Ultrafast Optical Parametric Amplifier for High-Intensity Lasers | ||||
| Sprache: | Englisch | ||||
| Referenten: | Bagnoud, Prof. Dr. Vincent ; Roth, Prof. Dr. Markus | ||||
| Publikationsjahr: | 2023 | ||||
| Ort: | Darmstadt | ||||
| Kollation: | xii, 134 Seiten | ||||
| Datum der mündlichen Prüfung: | 15 Mai 2023 | ||||
| DOI: | 10.26083/tuprints-00024200 | ||||
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/24200 | ||||
| Kurzbeschreibung (Abstract): | The objective of this work was the development of a laser module to improve the temporal contrast of high-intensity laser systems and its implementation at the high-power laser PHELIX at the GSI Helmholtzzentrum für Schwerionenforschung GmbH in Darmstadt. By improving the temporal contrast, experiments with laser-plasma interaction under extreme peak intensities should be made possible without disturbing or destroying the target before the arrival of the main pulse. In the frame of this work, I have therefore developed an ultrafast optical parametric amplifier (uOPA), which enables high-temporal-contrast amplification of short laser pulses up to the millijoule range and can thus replace subsequent contrast-degrading amplifier systems. In addition to reducing amplified spontaneous emission, the occurrence of pre-pulses can also be prevented. I have additionally developed a dedicated pump module for this amplifier, which can be used in a wide spectral range around the central wavelength of 1 μm and thereby can be implemented on various laser systems as a pump laser for uOPA systems. Thus, in addition to the high-contrast amplifier for the Nd:glass laser system PHELIX, I have built a second uOPA module for use in the diode-pumped Yb:CaF2 laser system PENELOPE. I implemented the module on the high-power PHELIX laser as part of this work, which successfully replaced an amplifier, which generated intense pre-pulses, in the amplification chain. This allowed me to lower the pre-pulse contrast at PHELIX by nearly three orders of magnitude to a contrast level of 6.2·10⁻¹¹, keeping the pre-pulse intensity, even for the highest possible intensity at PHELIX, below 100 GW/cm². |
||||
| Alternatives oder übersetztes Abstract: |
|
||||
| Freie Schlagworte: | laser, temporal contrast, high-intensity laser, ultrafast optical parametric amplifier, short pulse, PHELIX, PENELOPE | ||||
| Status: | Verlagsversion | ||||
| URN: | urn:nbn:de:tuda-tuprints-242000 | ||||
| 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 |
||||
| Hinterlegungsdatum: | 30 Jun 2023 12:11 | ||||
| Letzte Änderung: | 05 Jul 2023 10:08 | ||||
| PPN: | |||||
| Referenten: | Bagnoud, Prof. Dr. Vincent ; Roth, Prof. Dr. Markus | ||||
| Datum der mündlichen Prüfung / Verteidigung / mdl. Prüfung: | 15 Mai 2023 | ||||
| Export: | |||||
| Suche nach Titel in: | TUfind oder in Google | ||||
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum