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Visar resultat 1 - 5 av 98 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Optical Memories and Processing in Time- and Frequency Domain

   Författare :Baozhu Luo; Atomfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Optical storage; photon echo; spectral hole burning; nonlinear optics; fiber amplifier; logical operation; phase retrieval; polarization holographic recording and retrieval; optical processing; Atomic and molecular physics; Atom- och molekylärfysik; Fysicumarkivet A:1998:Luo;

   Sammanfattning : Spectral hole burning and photon echoes are the techniques for frequency-selective optical memories, which have the potential to increase areal data storage density by a factor 10**7. They also have the capability to perform in-memory data processing. LÄS MER

3. 2. Hydrogen Storage Materials : Design, Catalysis, Thermodynamics, Structure and Optics

   Författare :Carlos Moysés Graça Araújo; Rajeev Ahuja; Ole Martin Løvvik; Uppsala universitet; []
   Nyckelord :Materials science; Hydrogen-storage materials; Density functional theory; Molecular dynamics; Catalysis; Thermodynamics; Optics; Materialvetenskap;

   Sammanfattning : Hydrogen is abundant, uniformly distributed throughout the Earth's surface and its oxidation product (water) is environmentally benign. Owing to these features, it is considered as an ideal synthetic fuel for a new world energetic matrix (renewable, secure and environmentally friendly) that could allow a sustainable future development. LÄS MER

4. 3. Electrochromic materials : optical, electrophysical and structural properties

   Författare :Anne M. Andersson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; mechanical stress; cyclic voltammetry; microstructure; topotaxy; infrared reflectance spectroscopy; window coating; optical characterization; optical characterization; smart window; x-ray electron spectroscopy; soft chemistry; intercalation; energy efficiency; evaporation; electrochromism; polymer electrolyte; ion storage; nickel oxide; Christiansen effect; structural characterization; transmission electron spectroscopy; chemical potential; vanadium oxide; sputtering; electrochemistry; tungsten oxide; thin film technolology; x-ray diffraction spectrometry; infrared reflectance spectroscopy; impedance spectroscpoy;

   Sammanfattning : .... LÄS MER

5. 4. Optical Studies For Synchrotron Radiation Beamlines

   Författare :Walan Grizolli; Lunds universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Synchrotron Radiation; Optics; X-ray Optics; Beamline; Polarimetry; Coherence; Storage Rings; Diffraction Limited Storage Rings;

   Sammanfattning : Synchrotron radiation sources have greatly contributed to the progress in many fields of science. The development of the storage ring technologies has made possible to obtain very low emittance electron beams, which together with the use of undulators allow guiding a very high photon flux into a very small spot required by the experiments. LÄS MER

7. 5. Investigations of Issues Relevant to the Application of Photon Echoes in Information Technology

   Författare :Ulf Elman; Atomfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nonlinear optics; fibre amplifier; Boolean operation; rare earth metals; Atom- och molekylärfysik; Atomic and molecular physics; optical processing; photon echo; optical storage; Fysicumarkivet A:1998:Elman;

   Sammanfattning : Photon echoes have been studied both experimentally and theoretically, with the main part of the work centred around the concept of using photon echoes for all-optical data storage and processing. The four basic Boolean operators, AND, OR, NOT and XOR have been experimentally demonstrated using photon echoes. LÄS MER