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 “"Multiphoton processes"”.
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Evaluation Of The Photo-induced Structural Mechanisms In Chalcogenide
… material or created upon exposure. These defect processes, largely studied previously in individual binary material systems, have now been shown to be consistently present, but varying in extent, across the ternary glass compositions and exposure conditions examined. We thus establish the varying …
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Characterization of biological chromophores using fast electrophoretic analyses and multiphoton-exited fluorescence
… secretion. In this dissertation work, multiphoton excitation (MPE), a high sensitivity detection approach, and capillary electrophoresis (CE), a fast separation strategy, have been coupled to rapidly characterize primary amine neurotransmitters, to perform fast electrophoretic analyses …
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Nonlinear optical microscopy and spectroscopy by pulse shaping of a coherent fiber supercontinuum
… of molecular contrast derived from various multiphoton processes. Two-photon and three-photon fluorescence microscopy visualizes endogenous fluorophores. Second and third harmonic generation microscopy maps optical non-centrosymmetry and heterogeneity. Coherent Raman scattering spectroscopic …
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Characterizing RNA translocation in the parasitic weed Cuscuta pentagona
… approaches. Optoperforation, or the use of multiphoton processes to form quasi-free electron plasmas to initiate transient pore formation in plasma membranes, has been demonstrated, but not in cells of an intact plant. This work details a protocol for optoperforation of Arabidopsis epidermal …
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Probing Coherent States and Nonlinear Properties in Multifunctional Material Systems
… properties in the range of 690-1000 nm where multiphoton processes were responsible for the photoexcitations. We compared this excitation scheme, which is sensitive mainly to the surface states, to when the photoexcited energy (∼ 3.1 eV) was close to the bandgap of the nanorods. Our results …
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Nonlinear Optical Response of Simple Molecules and Two-Photon Semiconductor Lasers
… electronic transition rather than only one. This processes is known as two-photon gain (2PG). Semiconductors have large two-photon absorption coefficients, which are enhanced by ~2 orders of magnitude when using photons of very different energies, e.g., ћωa≈10ћωb. This enhancement should translate …