Search for dissertations about: "two-photon excitation"
Showing result 11 - 15 of 33 swedish dissertations containing the words two-photon excitation.
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11. Quantum chemical calculations of non-linear optical absorption
Abstract : This thesis represents a quantum chemical treatise ofvarious types of interactions between radiation and molecularsystems, with special emphasis on the nonlinear opticalprocesses of Multi-Photon Absorption and Excited StateAbsorption. Excitation energies, transition dipole moments,two-photon and three-photon tensor elements have beencalculated from different approaches; density functional theoryandab-initiotheory, employing different orders ofcorrelation treatment with the purpose to provide accuratevalues as well as evaluate the quality of the lower ordermethods. READ MORE
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12. Dynamics of multiphoton processes in nonlinear optics and x-ray spectroscopy
Abstract : New generations of ultrashort and intense laser pulses as well ashigh power synchrotron radiation sources and x-ray free electronlasers have promoted fast developments in nonlinear optics andx-ray spectroscopy.The new experimental achievements and the appearance of varieties of novelnonlinear phenomena call for further development of theories. READ MORE
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13. Time resolved molecular laser spectroscopy
Abstract : A number of experimental and theoretical schemes have been employed to perform time resolved investigations on diatomic molecules. Laser excitation of the molecule in question is the common ground in the cases discussed. READ MORE
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14. Time Resolved Laser Spectroscopy of Rydberg States in Group IIIA and IIIA Elements
Abstract : In this work radiative properties of neutral elements with one or two electrons outside closed subshells have been investigated. Using laser techniques in connection with atomic beams selective excitation of Rydberg states was performed. Most of the studied states were populated with two-step excitation. READ MORE
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15. Correlation spectroscopy of single emitters : fundamental studies and applications
Abstract : Correlation analysis and correlation spectroscopy has eversince the first developments, to characterise light emittingprocesses and biomolecular dynamics, continued to extend itspractical applicability. Today, correlation spectroscopy can beused in life science to study dynamical processes even at thesingle molecule level. READ MORE