Sökning: "electron wave packet trajectory"

Hittade 2 uppsatser innehållade orden electron wave packet trajectory.

1. 1. Semi-Classical Calculations of Multiple Trajectories in High-Harmonic Generation

   Kandidat-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Författare :Tom Causer; [2021]
   Nyckelord :hhg; high harmonic generation; trajectories; xuv; semi-classical; multiple; third trajectory; further; matlab; hhg approximation; simulation; far-field; near-field; fourier transform; Physics and Astronomy;

   Sammanfattning : The purpose of this thesis is to investigate the High-Harmonic Generation (HHG) process by simulating electron trajectories, and their resulting Extreme Ultra Violet (XUV) output. The HHG process is one in which a focused beam of infrared (IR) light can rival (in terms of intensity) the potentials of atoms, which makes tunnelling likely -- this sets off a chain of events resulting in an XUV pulse. LÄS MER

3. 2. Dependency of high-order harmonics to polarisation properties of many-cycle driving fields

   Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Författare :Timothé Ramboazanaka; [2018]
   Nyckelord :Atomic physics; attosecond pulses; high-order harmonic generation; polarisation; polarisation state; electron wave packet trajectory; three-step model; time-dependent schrödinger equation; TDSE; two-colour; selection rules; symmetry; conservation laws; Physics and Astronomy;

   Sammanfattning : Light-matter interactions can be used to probe both light and matter as they yield information on a system's state. On the ultrafast timescale, it is possible to employ these interactions to probe fast-occurring phenomena. LÄS MER