Essays about: "high-order harmonic generation"
Showing result 1 - 5 of 19 essays containing the words high-order harmonic generation.
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1. Quantum Optical Description of High-order Harmonic Generation
University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionenAbstract : High-order Harmonic Generation (HHG) is a highly non-linear process in which an atom interacts with a strong laser field. The laser field lowers the atomic potential barrier allowing bound electrons to escape into the continuum through tunnel ionization, propagate, and, with some probability, recombine with the parent ion. READ MORE
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2. Pulsed Laser Beam Quality Assessment via Phase Retrieval
University essay from Lunds universitet/AtomfysikAbstract : In the search for a better understanding of the fundamental nature of the atom, the development of femtosecond pulsed laser sources has opened up for many applications, in particular in time-resolved physics. For many of those, like the generation of attosecond pulses through high-order harmonic generation, high intensity is needed and the quality of the beam is a critical factor. READ MORE
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3. Generation and Characterization of Intense Attosecond Pulses
University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionenAbstract : 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
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4. Design and Commissioning of an Ionization Intensity Monitor
University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionenAbstract : The dynamics of molecules and electrons takes place on timescales of femtoseconds and attoseconds, respectively. This requires ultrashort and intense extreme ultraviolet (XUV) pulses to be able to study them. READ MORE
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5. Evaluation of the wavefronts and spatial structures of ultrashort pulses passing through a micro-channel plate
University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionenAbstract : The first aim of this project is to make high-order harmonic (HHG) setups more compact and user-friendly, by including a micro-channel plate (MCP). Simulations of the transmission properties of an MCP has been performed. These simulations displayed introduced structure in the far field, but a very well behaved beam in the near field. READ MORE