Search for dissertations about: "Two-photon ionization"

Showing result 1 - 5 of 17 swedish dissertations containing the words Two-photon ionization.

  2. 1. Two photon above threshold ionization in a relativistic framework : Attosecond delays in high Z elements

    Author : Jimmy Vinbladh; Eva Lindroth; Patrick Norman; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; teoretisk fysik; Theoretical Physics;

    Abstract : Recent advances in experimental physics opens up for improved time resolution on measurements of ionizing processes in atoms caused by an EM-field. There exist non-relativistic models that describe photo-ionization events involving two photons, for various atoms, where relativistic effects, e.g. spin-orbit interactions, are small. READ MORE

  4. 2. Light-Matter Interaction on the Attosecond Timescale

    Author : Marcus Dahlström; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2011:Dahlström; Temporal characterization; Two-color harmonic generation; High-order harmonic generation; Attosecond pulse trains; Electron wave packets; Two-photon ionization; Coherent control;

    Abstract : Attosecond science refers to physical processes that occur on the natural timescale of electron motion in atomic and molecular systems. Attosecond time resolution can be obtained experimentally through a process called high-order harmonic generation where sharp attosecond pulses are formed in the time domain. READ MORE

  5. 3. Attosecond Wave Packet Metrology

    Author : Marko Swoboda; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Molecular dissociation; Electron wave packets; Pulse characterization; Two-color harmonic generation; Attosecond pulse trains; Single attosecond pulses; Resonant two-photon ionization; Fysicumarkivet A:2010:Swoboda;

    Abstract : Attosecond pulses allow the study of electrons on their natural timescale. They are created from the interaction of atoms with ultrashort, intense laser pulses whose electric field approaches the strength of inner-atomic electric fields. This thesis presents experiments around the generation, characterization and application of attosecond pulses. READ MORE

  6. 4. Experimental Studies in Chemical Physics

    Author : Lars Karlsson; Michel Herman; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; Physics; fysik;

    Abstract : Different laser based methods have been applied for studying different aspects on chemical physics.The transition metal containing molecules vanadium oxide (VO), zirconium sulphide (ZrS), zirconium dimer (Zr2) and titanium dimer (Ti2) have been studied in cool molecular beams using two-photon ionization technique. READ MORE

  7. 5. Theoretical study of light-molecule nonlinear interactions

    Author : Ke Zhao; Yi Luo; Fahmi Himo; Valdas Pasiskevicius; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bioengineering; Bioteknik;

    Abstract : The work presented in the thesis concerned theoretical study of light-matter nonlinear interactions. Two important aspects of such interactions have been examined, namely the nonlinear optical properties of a series of organic charge transfer molecules in solutions induced by the laser light and the propagation of the ultrafast high power laser through the nonlinear molecular medium. READ MORE