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 10 of 10 for “"optical limiting"”.
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Optical Limiting and Degenerate Four-Wave Mixing in Novel Fullerenes
Two experimental methods, optical limiting and degenerate four-wave mixing, are employed to study the nonlinear optical properties of various novel fullerenes structures. Optical limiting refers to decreased transmittance of a material with increased incident light intensity. Detailed measurements …
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Nonlinear optical properties of natural dyes based on optical resonance
Recent research shows that the study of optical properties of organic material natural dyes has gained much consideration. The specific functional groups in several natural dyes remain essential for the large nonlinear absorption expressed in terms of nonlinear optical susceptibilities or other …
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Nano and Nanostructured Materials for Optical Applications
… uses of nano and nanostructured materials for optical applications are investigated in the context of optical limiting, three dimensional displays, and optical sensing. Nanomaterials with nonlinear optical responses are promising candidates for self-activating optical limiters. In the first …
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Novel active waveguide devices in direct-bonded structures
… studies on the use of direct bonding for optical waveguide fabrication. The direct bonding technique involves contacting two ultra-clean polished surfaces to form an adhesive-free vacuum-tight bond. Optical materials bonded in this way can be formed into waveguide devices, and this work …
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Study of Nanoparticle/Polymer Composites: I) Microstructures and Nonlinear Optical Solutions Based on Single-Walled Carbon Nanotubes and Polymers and II) Optical Properties of Quantum Dot/Polymer Composites
… is followed by the study and comparison of the optical limiting performances of different Single-Walled Carbon Nanotubes/conjugated polymer dispersions (Chapter 2). The results obtained are discussed in terms of dispersion of the SWNTs in the polymer solutions and resulting SWNT bundle …
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Ligand reactivities in platinum and palladium chalcogen complexes
… (M= Pd or Pt). The optical limiting properties of the newly synthesized complexes are also reported.An extension of alkylation and oxidation of the {Pt2(B5-S)2} core will also be included. A series of imidazolium and thiazolium ligands have been successfully anchored …
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Molecular Structure-nonlinear Optical Property Relationships For A Series Of Polymethine And Squaraine Molecules
… imaging, three-dimensional microfabrication, optical data storage and optical limiting, have motivated researchers to find novel materials exhibiting strong 2PA. Organic materials are promising candidates because their linear and nonlinear optical properties can be optimized for applications …
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Three-photon Absorption Process In Organic Dyes Enhanced By Surface Plasmon Resonance
… because of their potential applications in optical limiting, data storage and biomedical fields. Perhaps, one of the most investigated processes studied so far has been two-photon absorption (2PA). These investigations have resulted in successful applications in all the fields mentioned …
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Study of Linear and Nonlinear Optical Interactions of Micro/Nanoparticles Embedded in an Organosiloxane Matrix
… to drastic changes with respect to the incident optical field intensity. Such variations can lead to significant changes in optical and thermal properties of nanomaterials. Recent research into the interactions between light and matter has mainly focused on understanding electronic, photonic, and …
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Dynamic holography in semiconductors and biomedical optics
… and displaying. For instance, holographic optical elements, which take advantage of holographic imaging principles, perform the functions of lenses, gratings or mirrors. Holographic interferometry is also widely used for non-destructive testing to reveal structural faults within materials …