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 10 of 10 for “"Talbot effect"”.
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A study of dimension estimates in the context of spherical Talbot effect and Besov mappings
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-08-01
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High contrast interferometry and finite temperature coherence of Bose-Einstein condensates
… which can now be clearly attributed to the Talbot effect. This is the first reported observation of the spatial Talbot effect of light interacting with period BEC fringes, revealing the drastic effect it can have on the interference signal. The major results regarding phase fluctuations in …
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Self-organized magnetization patterns in cold atoms
… via the optical non-linearity and the Talbot effect. For a linearly polarized pump beam a generation of modulated light with orthogonal polarization is seen to occur, signaling the presence of a polarization instability. Imaging of the refractive index modulations at the end of the …
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Probing and preparing novel states of quantum degenerate rubidium atoms in optical lattices
… insulator transition through the matter wave Talbot effect. This technique will be particularly powerful for studying antiferromagnetic phases of matter due to its sensitivity to the crystalline composition. The second major component of this thesis describes a new scheme to realize the Harper …
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Proximity Field Nanopatterning, Its Optics and Applications
… results of rigorous coupled wave analysis. Talbot effect, key physical phenomenon behind this technique, is explored in detail, especially in wavelength comparable regime, and its variation from less coherent light source (more specifically, exposure with angular and spectral bandwidth) and …
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Walking droplets confined by applied or topographically-induced potentials : dynamics and stability
… hydrodynamic analog of optical trapping with the Talbot effect, showing that drops may become trapped at the extrema of waves generated in the vicinity of a linear array of pillars. We also characterize the dynamics of droplets bouncing and walking above the Faraday threshold, indicating regimes …
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Discrete Wave Propagation In Quadratically Nonlinear Media
… of dissertation, observation of the discrete Talbot effect is reported. In contrast to continuous systems, where Talbot self-imaging effect occurs irrespective of the pattern period, in discrete configurations this process is only possible for a specific set of periodicities. The major part of …
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Computational and statistical approaches to optical spectroscopy
… In the first part, we utilize the non-paraxial Talbot effect to build compact and high-performance spectrometers and wave meters that use computational processing for spectral information retrieval without the need for a full-spectrum calibration process. In the second part, we develop an …
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Interaction of Terahertz Radiation with Semiconductor Nanostructures and Quantum Systems
… which was called the "in-plane photoelectric effect", show the realisation of the Talbot effect in the THz range for focusing of THz radiation using waveguides, and describe the work towards developing devices bridging the terahertz and visible/near-infrared frequency ranges, such as …
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Talbotův jev
… modelovaním a experimentálnym overením frakčného Talbotovho javu na dvojosových mriežkach. Hlavným cieľom bolo vytvoriť dva výpočtové programy v prostredí Python: analytický model využívajúci Gaussove sumy a numerický model založený na metóde uhlového spektra (ASM). Správnosť oboch algoritmov bola …