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 7 of 7 for “"membrane mirror"”.
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Fourier-based optical analysis of a membrane mirror spatial light modulator
… and readout system designs for a MEMS-based membrane mirror spatial light modulator (MMSLM), for use as a projection display at a range of visible and infrared wavelengths. Output images, contrast curves and pixel uniformities are simulated for each case study. Simulation results indicate the …
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Sensorless adaptive optics in advanced microscopy techniques
… microscopy, the combination of a deformable membrane mirror and a random search optimisation algorithm is used to improve system performance at depth by pre-shaping the incoming wavefront with aberrations that are equal but opposite to those that degrade quality. The approach used in this …
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Dynamics and Control of Membrane Mirrors for Adaptive Optic Applications
… rely heavily on space-borne telescopes, of which mirrors are an integral component. However, traditional solid mirrors are heavy and require a big storage space. Deploying membrane mirrors can alleviate many of these obstacles. Membrane mirrors are light and can be compactly stowed resulting in …
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Deployment and on-orbit shape modifications for a large space telescope using magnetostriction
… Hubble Space Telescope, with its 2.4-m primary mirror, enabled notable scientific progress and discoveries, like for instance the acceleration of the expansion of the universe. Twenty-six years later, NASA is about the launch the next generation of space telescopes, namely the James Webb Space …
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Modeling and Control of SPIDER Satellite Components
… the integration of piezoelectric material with membranes. In both the one and two dimensional problems, experimental validation is provided to support the developed models. Next, the linear quadratic regulator (LQR) control problem is defined from a distributed parameter systems approach, and …
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Techniques in deep imaging within biological tissue
… confocal microscope in reflection, a deformable membrane mirror (DMM) was used to counteract for sample aberrations within a closed feedback loop. By selecting various image properties (e. g. brightness, contrast or resolution), various optimisation algorithms were used to improve this property …
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Adaptive control of coherent soft X-rays
… a laser-pulse shaper based on a deformable membrane mirror was built. Pulse-shape optimization resulted in increased high-harmonic generation efficiency --- but more importantly the qualitative shape of the spectral response could be significantly modified for high-harmonic generation in …