Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"photoinduced dynamics"”.
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Photoinduced Dynamics Studied using Single-Shot Optical and Terahertz Spectroscopy
… (THz) spectroscopy to study irreversible photoinduced dynamics and materials far from equilibrium. First, we motivate the understanding of photoinduced material responses as initiated by, and probed with, ultrafast laser pulses, including the techniques of conventional optical pump-probe …
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Photoinduced dynamics studied by ultrafast single-shot pump-probe spectroscopy
… and its applications to study irreversible photoinduced dynamics. First, the ultrafast laser sources and the related control and characterization techniques are discussed. In particular, we have invented a two-stage dual-beam noncollinear optical parametric amplifier to provide tunable …
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Ultrafast photoinduced dynamics of low-dimensional excitonic materials at room temperature
One challenge of condensed matter physics is to explain the complex behaviour of the material world. Doing so requires determining the significant degrees of freedom, which can then be controlled, varied, measured experimentally, or modelled theoretically. Here, we use the frameworks of elementary …
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Single-shot spectroscopy of solid-state photoinduced dynamics far from equilibrium
… developed and improved as a method to observe photoinduced dynamics far from equilibrium. The method was then employed to illuminate material dynamics in platinum-halide quasi-one-dimensional chain compounds (PtI) and in the semimetal bismuth. Both material systems exhibit strongly coupled …
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Ultrafast photoinduced phase transitions in complex materials probed by time-resolved resonant soft x-ray diffraction
… was theoretically predicted that demagnetization dynamics in AFM should occur faster than in FM materials as no net angular momentum has to be transferred out of the spin system. We investigated two different AFM materials in order to learn more about their ultrafast dynamics. In Ho, a metallic …