Sökning: "Chirped pulse amplification"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Chirped pulse amplification.

  1. 1. Second-generation High-Order Harmonic Sources — From CPA to OPCPA

    Författare :Piotr Rudawski; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Optical parametric chirped pulse amplification; Fysicumarkivet A:2014:Rudawski; Chirped pulse amplification; High-order harmonic generation; Attosecond pulse;

    Sammanfattning : This thesis presents two sources of extreme ultraviolet (XUV) radiation based on high-order harmonic generation (HHG) in gases. The sources were developed for experiments requiring high-flux harmonic beams or HHG pulses at high-repetition rate. These were used experimentally to image nano-scale objects. LÄS MER

  3. 2. Generation, characterization and application of infrared few-cycle light pulses

    Författare :Ivan Sytcevich; NanoLund: Centre for Nanoscience; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Few-cycle pulses; pulse characterization; optical parametric amplification; Fysicumarkivet A:2022:Sytcevich;

    Sammanfattning : In recent decades, laser systems emitting pulses of light containing only a few electric field oscillations under their envelope have become common in many ultrafast optics laboratories. Owing to unique temporal characteristics and achieving extreme field strengths, these so-­called few­-cycle pulses have been instrumental in unlocking new regimes of light-­matter interaction. LÄS MER

  4. 3. A sub-5 fs 100 TW optical parametric synthesizer

    Författare :Peter Fischer; Laszlo Veisz; Ove Axner; Cord L. Arnold; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Optical parametric amplification OPA ; optical parametric synthesizer OPS optimization; energy stability; carrier envelop phase stability; temporal intensity contrast; saturation; fewcycle; tera watt; fysik; Physics;

    Sammanfattning : State-of-the-art ultrashort light sources in the visible and near-infrared spectral regions provide direct access to the femtosecond realm, thereby enabling understanding and control of electronic processes within matter. On the other hand, ultra-intense light pulses lead to the emergence of relativistic electron motion and many related phenomena, such as electron & ion acceleration and high-order harmonic generation in plasmas. LÄS MER

  5. 4. Laser-Produced Plasmas for Particle Acceleration

    Författare :Kristoffer Svensson; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis describes experimental studies that aim to stabilise and optimise laser-based particle accelerators. The technique is called laser wakefield acceleration, where electric fields of the order of 102 GV/m accelerate electrons to high energies (⇠102 MeV) over mm-distances in laser-produced plasmas. LÄS MER

  7. 5. DEVELOPMENT OF A HIGH ENERGY TI:SAPPHIRE LASER FOR THE EXCITATION OF EXTREME ULTRAVIOLET LASERS

    Författare :Dale Martz; Jorge Rocca; Colorado State University; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SRA - E-vetenskap SeRC ; SRA - E-Science SeRC ;

    Sammanfattning : This dissertation describes the design, construction and characterization of a high energy chirped-pulse amplification Titanium-Sapphire laser system for the excitation of Extreme Ultraviolet (EUV) lasers. Compact EUV lasers have made possible nano-scale imaging, dense plasma diagnostics and photo-chemistry and photo-physics studies. LÄS MER