Search for dissertations about: "extreme ultraviolet"

Showing result 11 - 15 of 49 swedish dissertations containing the words extreme ultraviolet.

  2. 11. Generation of Ultrashort Pulses – From Femtoseconds to Attoseconds

    Author : Maite Louisy; Atomfysik; []
    Keywords : Attosecond; Femtosecond; Ultrashort laser pulses; Ultrafast optics; High-order harmonic generation; extreme ultraviolet; Post-compression; Hollow-core capillary; d-scan; Optical gating; Fysicumarkivet A:2017:Louisy;

    Abstract : Electronic dynamics takes place on the attosecond timescale and can thus only be studied using a tool with attosecond temporal resolution. High harmonic generation (HHG) provides coherent attosecond pulses in the extreme ultraviolet spectral region. READ MORE

  4. 12. Extreme Ultraviolet Light Shaping and Spectroscopy through Opto-Optical Modulation

    Author : Anna Olofsson; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : .... READ MORE

  5. 13. Ultrafast Photoionization Dynamics Studied with Coincidence Momentum Imaging Spectrometers

    Author : Yu-Chen Cheng; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Photoionization; High-order Harmonic Generation; Extreme Ultraviolet; Free-Electron Laser; Molecular Dissociation; Charge Transfer; Coincidence Measurement; Momentum Imaging; Electron Wave Packet; Fysicumarkivet A:2019:Cheng;

    Abstract : The time scale of the dynamics in atoms and molecules varies from attoseconds (10-18) to picoseconds (10-12) depending on the size of the particles. To study such dynamics, ultrafast light pulses are needed to trigger and capture the reaction. One of the most direct methods consists in ionizing the system and observing the following response. READ MORE

  6. 14. An Intense Attosecond Light Source - Towards Extreme Ultraviolet Pump-Probe Experiments

    Author : Filippo Campi; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Attosecond; Femtosecond; Ultrashort; Ultrafast; High-order Harmonic Generation; pump probe; XUV; Fysicumarkivet A:2017:Campi;

    Abstract : This thesis presents important steps towards performing high-intensity attosecond pump-probe experiments at the Lund high-intensity extreme ultraviolet (XUV) beamline, which followed two complementary paths: maximization of the XUV intensity available in the interaction region with a gas target, and providing attosecond temporal resolution.To maximize the energy of the XUV pulses generated via high-order harmonicgeneration (HHG), the macroscopic response of atoms to the driving infrared field was optimized. READ MORE

  7. 15. Atomic and Molecular Dynamics Probed by Intense Extreme Ultraviolet Attosecond Pulses

    Author : Jasper Peschel; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Attosecond science; Ultrafast phenomena; High-order Harmonics Generation; Free Electron Lasers; Photoionization; Photodissociation; Fysicumarkivet A:2021:Peschel;

    Abstract : This thesis work was aimed to investigate dynamical processes in atoms and molecules on ultrafast time scales initiated by absorption of light in the extreme ultraviolet (XUV) regime. In particular, photoionization and photodissociation have been studied using pump-probe techniques involving ultrafast laser pulses. READ MORE