Sökning: "holograms"

Visar resultat 1 - 5 av 15 avhandlingar innehållade ordet holograms.

  1. 1. Waveguide holograms for integrated optics : design and application to fiber coupling

    Författare :Johan Backlund; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polarization; optical fiber coupling; waveguide holograms; waveguide components; integrated optics; grating couplers;

    Sammanfattning : .... LÄS MER

  3. 2. Manufacture of High Efficiency Surface Relief Computer Generated Holograms

    Författare :Mats Ekberg; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; kinoforms; ;

    Sammanfattning : This thesis treats design, manufacture, evaluation and applications of computer-generated surface relief holograms - kinoforms. These diffractive, phase-only, planar optical components are characterized by high efficiency, design flexibility, light weight and small size. They can further be reproduced at low cost. LÄS MER

  4. 3. Study of High Efficiency Phase-Only Diffractive Optical Elements

    Författare :J. Michael Larsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; array illuminators; computer generated phase holograms; computer simulations; diffractive bifocal intraocular lenses; kinoforms; design; manufacture; diffractive optical elements; evaluation; simulation;

    Sammanfattning : This work deals with the design, simulation, manufacture, and evaluation of diffractive optical elements. Particularly, kinoforms and diffractive bifocal intraocular lenses are studied. Evaluation of kinoforms, i.e. LÄS MER

  5. 4. Advances in Holographic Optical Trapping

    Författare :Martin Persson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Optical tweezers; Holographic optical trapping; Optical force measurement; Spatial light modulators; Holographic beam steering; Liquid crystals;

    Sammanfattning : Holographic optical trapping (HOT) is a technique for non-invasive dynamic anipulation of multiple microscopic objects, which has been used for many applications in the life sciences during the past decade. The technique uses holographic beam steering with a spatial light modulator (SLM) to direct light to the desired positions of optical traps. LÄS MER

  7. 5. Digital holography and image processing methods for applications in biophysics

    Författare :Hanqing Zhang; Magnus Andersson; Krister Wiklund; Wählby Carolina; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Digital holographic microscopy; image processing; image reconstruction; bacterial adhesion; cell morphology; algorithm development; software design; quantitative measurement; microfluidics; multidisciplinary research; signalbehandling; Signal Processing; teknisk fysik med inriktningen mikrosystemteknik; engineering science with specialization in microsystems technology;

    Sammanfattning : Understanding dynamic mechanisms, morphology and behavior of bacteria are important to develop new therapeutics to cure diseases. For example, bacterial adhesion mechanisms are prerequisites for initiation of infections and for several bacterial strains this adhesion process is mediated by adhesive surface organelles, also known as fimbriae. LÄS MER