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Found 2 essays matching the above criteria.

1. 1. Towards the control of photo-ionization with electron wave-packet interferences

   University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

   Author : Andreas Stokkeland; [2020]
   Keywords : XUV attosecond pulses; photoelectron distribution; photoionization; phase shift; electron wave-packet interference; infrared field; IR-field; frequency components; Fourier transform; XUV photons; frequency domain; Physics and Astronomy;

   Abstract : In this work the photoelectric effect is explored through simulations of the phase shift that an IR-field can induce into an electron wave packet and the photoelectron distribution over frequency components that is produced in the photoionization of an atom with a attosecond pulses made of XUV photons. The IR-field is sent along two attosecond pulses made of XUV photons towards a 3D momentum spectrometer were there is a gas that can be photoionized and the photoelectrons can be measured. READ MORE

3. 2. Generation and Characterization of Intense Attosecond Pulses

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Marius Plach; [2020]
   Keywords : Attosecond physics; high-order harmonic generation; high harmonic generation; HHG; attosecond pulses; molecular dynamics; attosecond pulse generation; harmonic emission time delay; temporal reconstruction of attosecond pulses; strong field processes; Three-step model; RABBIT; Reconstruction of Attosecond Beating By Interference of Two-photon Transition; Terawatt Laser System; Intense XUV Beamline; XUV; LLC; Physics and Astronomy;

   Abstract : Research on ultrafast dynamics in atoms and molecules requires short pulses. In order to resolve processes taking place on a femtosecond timescale sufficiently, these pulses require a duration on the attosecond time scale. READ MORE