10 Result(s)
within
Matthias Wollenhaupt
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Chapter
Bichromatic Control of Free Electron Wave Packets
We report on recent developments in coherent control of ultrafast photoionization dynamics with ultrashort polarization-shaped bichromatic pulse sequences. In the experiments, a novel pulse sha** scheme for ...
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Chapter
Control of Ultrafast Electron Dynamics with Shaped Femtosecond Laser Pulses: From Atoms to Solids
In this chapter, we present an introduction to the fundamentals of femtosecond pulse sha** and review recent demonstrations of coherent control by pulse tailoring. We portray control of three-dimensional fre...
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Chapter and Conference Paper
Material Processing of Dielectrics via Temporally Shaped Femtosecond Laser Pulses as Direct Patterning Method for Nanophotonic Applications
Dielectric materials are of great interest for optical applications since they are transparent in the UV, visible and IR spectral range. That makes them very suitable for optical filters, polarizer, waveguides...
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Chapter
The Interplay of Nuclear and Electron Wavepacket Motion in the Control of Molecular Processes: A Theoretical Perspective
The concept of coherent control of molecular processes with light is introduced, sketching the way from single parameter to the multiparameter control in the time domain. Optimal control theory is by now a wid...
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Chapter
Short and Ultrashort Laser Pulses
In this contribution some basic properties of femtosecond laser pulses are summarized. In Sect. 12.1 we start with the linear properties of ultrashort light pulses. Nonlinear optical effects that w...
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Chapter
Temporal Pulse Tailoring in Ultrafast Laser Manufacturing Technologies
Ultrafast lasers have gained momentum in material processing technologies in response to requirements for higher accuracy. Minimal energy diffusion and high nonlinearity of interaction indicate the possibility...
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Chapter and Conference Paper
Tailored Femtosecond Pulses for Nanoscale Laser Processing of Dielectrics
Laser control of two basic ionization processes in dielectrics on intrinsic time and intensity scales with temporally asymmetric pulse trains is investigated. We create robust structures one order below the di...
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Chapter and Conference Paper
Ultrafast Switching of Coherent Electronic Excitation: Great Promise for Reaction Control on the Femtosecond Time Scale
We report on a physical mechanism of coherent control with shaped intense femtosecond laser pulses. To this end we study photoelectron spectra from the multi-photon ionization of potassium atoms using tailored...
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Article
Use of Femtosecond Laser Technique for Studying Physically Small Cracks
Since small crack propagation behavior is strongly affected by microstructure, very small artificial notches with a length in the submillimeter range are needed for a systematic study of microcrack behavior. L...
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Chapter
Optimal Control of Atomic, Molecular and Electron Dynamics with Tailored Femtosecond Laser Pulses
With the invention of the laser, the dream was realized to actively exert control over quantum systems. Active control over the dynamics of quantum mechanical systems is a fascinating perspective in modern phy...
