The experimental study of matter at extreme pressures and temperatures conditions produced with laser driven dynamic compression implies the use of nanosecond high power lasers. This work aims at studying the temporal profile distortion of laser pulses during amplification due to gain saturation and propose a simulation able to compensate this phenomenon for the case of the amplification chain of HPLF at ID24 of the European Synchrotron Radiation Facility. To complement the simulation a novel approach based on the temporal profile measurements has been adopted to estimate the energy of the pulse and the technique of Passive Pulse Replication developed by Marciante et al. has been installed in the facility to provide higher quality measurements of the temporal profile.
Lo studio sperimentale della materia a pressioni e temperature estreme, prodotte mediante compressione dinamica indotta da luce laser, implica l’uso di impulsi ad alta potenza nell’ordine dei nanosecondi. Questo lavoro ha lo scopo di studiare la distorsione del profilo temporale degli impulsi laser causata dalla saturazione del mezzo amplificatore e di proporre una simulazione in grado di riprodurre e compensare questo fenomeno nel caso specifico della High Power Laser Facility dello European Synchrotron Radiation Facility. Per completare la simulazione è stato adottato un nuovo approccio basato sulle misurazioni del profilo temporale per stimare l’energia dell’impulso. Inoltre, La tecnica di Passive Pulse Replication sviluppata da Marciante et al. è stata installata per fornire misurazioni del profilo temporale di qualità superiore.
Laser pulse amplification and characterization studies at the High Power Laser Facility of ESRF
MASTO, MATTEO
2020/2021
Abstract
The experimental study of matter at extreme pressures and temperatures conditions produced with laser driven dynamic compression implies the use of nanosecond high power lasers. This work aims at studying the temporal profile distortion of laser pulses during amplification due to gain saturation and propose a simulation able to compensate this phenomenon for the case of the amplification chain of HPLF at ID24 of the European Synchrotron Radiation Facility. To complement the simulation a novel approach based on the temporal profile measurements has been adopted to estimate the energy of the pulse and the technique of Passive Pulse Replication developed by Marciante et al. has been installed in the facility to provide higher quality measurements of the temporal profile.File | Dimensione | Formato | |
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2022_04_MASTO.pdf
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Executive_Summary_MASTO.pdf
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https://hdl.handle.net/10589/186894