Search for dissertations about: "Ultrashort laser pulses"

Showing result 1 - 5 of 39 swedish dissertations containing the words Ultrashort laser pulses.

2. 1. Temporal Aspects of High-Intensity Laser-Matter Interactions

   Author : Johan Mauritsson; Atomfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Particle Acceleration; Laser technology; Relativistic Self-Focusing; High-Intensity Lasers; Attosecond Pulses; Pulse Characterization; XUV; High-Order Harmonics; Ultrashort Pulses; Laserteknik; Atom- och molekylärfysik; Atomic and molecular physics; Fysicumarkivet A:2003:Mauritsson;

   Abstract : The availability of short-pulse, high-intensity lasers has opened doors to new areas in atomic and plasma physics. The short pulses (a few femtoseconds), that are available today, enable unprecedented temporal measurements, while the high peak power accessible (several terawatts) allows physicists to study the interaction between light and relativistic plasmas. READ MORE

4. 2. 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

5. 3. Characterisation and Applications of Ultrashort Extreme Ultraviolet Pulses

   Author : Johan Norin; Atomfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; ultrashort pulses; pulse characterisation; sidebands; interferometry; Atom- och molekylärfysik; acetylene; Atomic and molecular physics; High-order harmonics; XUV; Fysicumarkivet A:2002:Norin;

   Abstract : When a strong laser field interacts with free atoms, harmonics up to very high orders are created. This extreme ultraviolet (XUV) radiation has interesting properties, such as spatial and temporal coherence, short pulse duration and high brightness. This thesis concentrates on the temporal aspects of this radiation. READ MORE

6. 4. Interaction of Ultrashort X-ray Pulses with Material

   Author : Magnus Bergh; Janos Hajdu; Andrea Cavalleri; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; free-electron laser; dense plasma; X-ray; radiation damage; laser physics; nano-plasma; Molecular Dynamics; Molecular biophysics; Molekylär biofysik;

   Abstract : Radiation damage limits the resolution in imaging experiments. Damage is caused by energy deposited into the sample during exposure. Ultrashort and extremely bright X-ray pulses from free-electron lasers (FELs) offer the possibility to outrun key damage processes, and temporarily improve radiation tolerance. READ MORE

7. 5. 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