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 6 of 6 for “"Fresnel Zone Plate"”.
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Image grating metrology using a Fresnel zone plate
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2003.
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Characteristics of different focusing antennas in the near field region
… such as array antennas, reflector antennas and Fresnel zone plate (FZP) antennas have been used for these applications. Here, first, a new scheme in designing focused array antennas with desired sidelobe levels (SLLs) in the near field region is presented. The performance of the large focused …
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Integrated diffractive optical elements for terahertz beam shaping and polarization control /
… the research introduces hybrid multi-phase Fresnel zone plate (H-MPZP) lenses with reduced structural complexity and enhanced focusing performance, high contrast grating (HCG) waveplates with sinusoidal surface modulation for broadband polarization manipulation, and free-standing …
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Micro-optic elements for a compact opto-electronic integrated neural coprocessor
… an optical element based on the concept of the Fresnel Zone Plate was developed and experimentally tested. The zone plate based elements offer an easily scalable method for fabricating the COIN optical interconnects using standard lithographic processes and appear to be the best choice for the …
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Femtosekunden-Spektroskopie biologischer Systeme mittels kohärenter Kontrolle
… and theory. The novel phenomenon of a Fresnel zone plate in the time domain is first developed in theory and then successfully realised in experiment.
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Flat optics based on patterned nanostructures for concentrating light
… of planar optical components, such as a Fresnel zone plate. As a follow up to this work, we explored the possibility of extending the field enhancement associated with plasmonic bowtie nanoantennas (BNAs), which typically decays evanescently, away from the surface. Our simulation results …