Search for dissertations about: "Femtosecond laser pulses"

Showing result 6 - 10 of 55 swedish dissertations containing the words Femtosecond laser pulses.

  2. 6. Optimisation and Application of Intense High-Order Harmonic Pulses

    Author : Lena Roos; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Coherent radiation; Optimisation; Multiphoton ionisation; Phase matching; Physics; Fysik; Atomic and molecular physics; Atom- och molekylärfysik; Laserteknik; Laser technology; High-power lasers; Short pulses; High-order harmonic generation; Short wavelength; Fysicumarkivet A:2001:Roos;

    Abstract : The high-order harmonics that are created in the interaction between an intense laser pulse (around 1014 W/cm2) and a gas medium are studied. The high-order harmonic radiation is a relatively new source of coherent radiation in the short wavelength range. READ MORE

  4. 7. Development and Applications of a Laser-Wakefield X-ray Source (updated)

    Author : Isabel Gallardo Gonzalez; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; laser-wakefield acceleration; betatron radiation; ionization-induced trapping; direct laser acceleration; laser-wakefield merging; warm dense matter; phase-contract imaging;

    Abstract : In laser-wakefield acceleration (LWFA), a femtosecond laser pulse is tightly focused in a gas to intensities exceeding 1018 W/cm2 . The laser radiation ionizes the medium and excites a plasma wave that travels behind the laser pulse. READ MORE

  5. 8. Development and Applications of a Laser-Wakefield X-ray Source

    Author : Isabel Gallardo Gonzalez; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; laser-wakefield acceleration; betatron radiation; ionization-induced trapping; direct laser acceleration; laser-wakefield merging; warm dense matter; phase-contrast imaging; Fysicumarkivet A:2018:Gallardo;

    Abstract : In laser-wakefield acceleration (LWFA), a femtosecond laser pulse is tightly focused in a gas to intensities exceeding 1018 W/cm2 . The laser radiation ionizes the medium and excites a plasma wave that travels behind the laser pulse. READ MORE

  6. 9. Photoemission Electron Microscopy for Ultrafast Nano-Optics - Femtoseconds to Attoseconds

    Author : Erik Mårsell; Synkrotronljusfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Nanorice; Spatiotemporal imaging; Attosecond pulses; Fysicumarkivet A:2016:Mårsell; Nanowires; Silver nanostructures; Femtosecond laser pulses; PEEM; Plasmonics; Ultrafast nano-optics;

    Abstract : Ultrafast nano-optics is a new and quickly evolving research field centred around the control, manipulation, and application of light on a nanometre and femtosecond scale. This can lead to improved electro-optical devices, more sensitive spectroscopy, and real-time control of chemical reactions. READ MORE

  7. 10. Generation and metrology of ultrashort pulses and their application in attosecond science

    Author : Lana Neoricic; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ultrashort; filamentation; femtosecond; dispersion scan; RABBIT; photoionisation; attosecond; interferometry; pump-probe; spectroscopy; photoelectron; wavepacket; Fysicumarkivet A:2022:Neoricic;

    Abstract : This thesis deals with the dynamical processes in atoms and small molecules initiated by the absorption of ultrashort, coherent light pulses. The studied phenomena takeplace on the femtosecond (1 fs = 10−15 s) and attosecond (1 as = 10−18 s) timescales and critically depend on the properties of the light fields that drive them. READ MORE