Sökning: "sidebands"
Visar resultat 1 - 5 av 12 avhandlingar innehållade ordet sidebands.
1. Applications of Short Extreme Ultraviolet Pulses to the Spectroscopy of Atoms and Molecules
Sammanfattning : This thesis is devoted to the characterisation in time and frequency, and to spectroscopic application, of extreme ultraviolet (XUV) pulses. High-order harmonic generation or wave mixing processes were used to produce the pulses in the XUV spectral region. LÄS MER
2. Characterisation and Applications of Ultrashort Extreme Ultraviolet Pulses
Sammanfattning : 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. LÄS MER
3. Superconducting kinetic inductance devices for nanoscale force sensing
Sammanfattning : In this thesis, we present a force sensor for atomic force microscopy based on cavity optomechanical principles. We explain the function, design, fabrication and characterisation of the force sensor. The mechanical part of the force sensor consists of a cantilever with a very fine tip. LÄS MER
4. Efficiency Enhancement Techniques for Free-Electron Lasers
Sammanfattning : The central question addressed in this thesis is how to make the free-electron laser (FEL) more efficient. In recent years, coherent diffraction imaging provides an important motivation for efficiency enhancement. This is because a more efficient FEL process enables converting a larger fraction of the electron beam's power into optical power. LÄS MER
5. Development of new NMR techniques and the structure of the N-terminal domain of Escherichia coli DnaB helicas
Sammanfattning : New techniques applicable in biomolecular nuclear magnetic resonance (NMR) spectroscopy were developed. The three-dimensional structure of the N-terminal domain of Escherichia coli DnaB helicase was determined at atomic resolution using heteronuclear multidimensional NMR techniques. LÄS MER