Sökning: "coherent harmonic generation"

Visar resultat 1 - 5 av 22 avhandlingar innehållade orden coherent harmonic generation.

  1. 1. Toward Creating a Coherent, Next-Generation Light Source with special emphasis on nonlinear harmonic generation in single-pass, high-gain free-electron lasers

    Författare :Sandra G. Biedron; Lunds universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Visible and Ultraviolet Sources; Intense Particle Beams and Radiation Sources; Frequency Conversion; Free-Electron Lasers; Harmonic Generation; Physics; Fysik;

    Sammanfattning : There is a strong desire for short wavelength (~1 Å), short pulsewidth (.... LÄS MER

  3. 2. Scaling and Gating Attosecond Pulse Generation

    Författare :Christoph Heyl; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Coherent imaging; Ultrafast electron dynamics; Single attosecond pulses; Attosecond pulse trains; XUV sources; High-order harmonic generation; XUV frequency combs; Fysicumarkivet A:2014:Heyl;

    Sammanfattning : High-order harmonic generation (HHG) provides the basis for attosecond light sources delivering coherent pulses in the extreme ultraviolet spectral region. Such light sources are employed for a variety of applications within imaging, attosecond spectroscopy, and high-precision frequency metrology. LÄS MER

  4. 3. Optimization of High-order Harmonic Generation for Attosecond Science

    Författare :Robin Weissenbilder; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; High-order Harmonic Generation; Attosecond Pulse Train; attosecond dynamics; photoelectron interferometry; Quantum state tomography; Phase matching; Fysicumarkivet A:2023:Weissenbilder;

    Sammanfattning : High-order harmonic generation is a highly nonlinear, though inherently inefficient, process which can lead to emission of coherent, broadband extreme ultraviolet radiation in the form of attosecond pulses. Attosecond pulses are crucial for experiments investigating photoionization dynamics on the femto- and attosecond timescales. LÄS MER

  5. 4. Optimisation and Application of Intense High-Order Harmonic Pulses

    Författare :Lena Roos; Atomfysik; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  7. 5. Timing Diagnostics and Coherent Harmonics from a test-FEL

    Författare :Nino Cutic; Lunds universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Free electron laser; undulator radiation; coherent harmonic generation; circular polariyation; vacuum ultra-violet; seed pulse timing; bunch length; electro-optical spectral decoding;

    Sammanfattning : The test free-electron laser (test-FEL) at MAX-lab in Lund demonstrated for the first time circularly polarized coherent femtosecond pulses at 66 nm wavelength. A 375 MeV electron bunch was seeded by a femtosecond laser at 263 nm and coherent harmonics were extracted in an APPLE-II type elliptical undulator. LÄS MER