Search for dissertations about: "phase grating"
Showing result 1 - 5 of 40 swedish dissertations containing the words phase grating.
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1. Laboratory X-Ray Phase-Contrast Imaging : Methods and Comparisons
Abstract : X-ray phase-contrast imaging has seen rapid development in recent decades due to its superior performance in imaging low-absorption objects, compared to traditional attenuation x-ray imaging. Having higher demand on coherence, x-ray phase-contrast imaging is performed mostly at synchrotrons. READ MORE
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2. Fibre Bragg Grating Components for Filtering, Switching and Lasing
Abstract : Fibre Bragg gratings (FBGs) are key components for a vast number of applications in optical communication systems, microwave photonics systems, and optical sensors, etc. The main topic of this thesis is fibre Bragg grating fabrication and applications in direct microwave optical filtering, high speed switching and switchable dual-wavelength fibre lasers. READ MORE
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3. Dynamic and Static Diffractive Optics - some Examples
Abstract : Diffractive optics is a modern branch of optics, that exploits microstructures to manipulate the propagation of light. Fast computers and the progress in manufacturing technique of microelectronics have made possible a rapid development of diffractive optics during the past 10 years. READ MORE
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4. Optical properties and helicity in liquid crystals
Abstract : .... READ MORE
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5. Infrared Laser-Induced Grating Techniques for Diagnostics in Reactive Flows
Abstract : AbstractThe work presented in this thesis is mainly focused on the development andapplication of infrared laser-induced grating techniques in order to measure the gasphase temperature and species concentrations in reactive flows. The two techniquesused for this purpose are laser-induced grating spectroscopy (LIGS) and degeneratefour-wave mixing (DFWM). READ MORE