Search for dissertations about: "two-photon absorption"

Showing result 1 - 5 of 41 swedish dissertations containing the words two-photon absorption.

  1. 1. Two-Photon Excited Fluorescence Depolarisation Experimental and Theoretical Development

    University dissertation from Uppsala : Universitetsbiblioteket

    Author : Linus Ryderfors; Uppsala universitet.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Two-photon excitation; Fluorescence; Fluorescence depolarisation; Fluorescence anisotropy; Time-correlated single photon counting; Gold nanoparticles; Rotational diffusion; Excited state symmetry; Extended Förster theory; Orientation correlation functions; Donor-donor energy migration DDEM ; NATURAL SCIENCES Physics Atomic and molecular physics Chemical physics; NATURVETENSKAP Fysik Atom- och molekylfysik Kemisk fysik;

    Abstract : We have studied fundamental aspects of time-resolved two-photon excited fluorescence depolarisation. The thesis presents experimental as well as theoretical progress. READ MORE

  2. 2. New insights in contact allergy and drug delivery. A study of formulation effects and hapten targets in skin using two-photon fluorescence microscopy

    University dissertation from Uppsala : Universitetsbiblioteket

    Author : Carl Simonsson; Göteborgs universitet.; Gothenburg University.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; contact allergy; cubic phases; cutaneous absorption; bromobimane; isothiocyanate; lipid vesicles; nano; pilosebaceous unit; two-photon microscopy;

    Abstract : The skin is a remarkable barrier, protecting us from invasion of e.g. harmful microorganisms and UV-radiation. However, the skin is not adopted to resist repeated exposure to the multitude of xenobiotics introduced into modern society. READ MORE

  3. 3. Derivation and application of response functions for nonlinear absorption and dichroisms

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Tobias Fahleson; KTH.; [2018]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Theoretical spectroscopy; cubic response theory; damped response theory; magnetic circular dichroism; linear birefringence; two-photon absorption; TPA; resonant-inelastic x-ray scattering; RIXS; DALTON program; Theoretical Chemistry and Biology; Teoretisk kemi och biologi;

    Abstract : This thesis is titled ’Derivation and application of response functions for nonlinear absorption and dichroisms’ and was written by Tobias Fahleson at the Division of Theoretical Chemistry & Biology at KTH Royal Institute of Technology in Sweden. It explores and expands upon theoretical means of quantifying a number of nonlinear spectroscopies, including two-photon absorption, resonant inelastic x-ray scattering, Jones birefringence, and magnetic circular dichroism. READ MORE

  4. 4. Light Control using Organometallic Chromophores

    University dissertation from Institutionen för fysik, kemi och biologi

    Author : Johan Henriksson; Linköpings universitet.; Linköpings universitet.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; organometallic chromophores; two-photon absorption; excited state absorption; excited state dipole moment; four-component formalism; clamping levels; spin-transition; NATURAL SCIENCES Physics Other physics Computational physics; NATURVETENSKAP Fysik Övrig fysik Beräkningsfysik;

    Abstract : The interaction between light and organometallic chromophores has been investigated theoretically in a strive for fast optical filters. The main emphasis is on two-photon absorption and excited state absorption as illustrated in the Jablonski diagram. We stress the need for relativistic calculations and have developed methods to address this issue. READ MORE

  5. 5. Theoretical Characterization of Optical Processes in Modecular Complexes

    University dissertation from Stockholm : KTH

    Author : Kai Liu; KTH.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; one-photon absorption; two-photon absorption; surface-enhanced Raman scattering; NATURAL SCIENCES Chemistry Theoretical chemistry; NATURVETENSKAP Kemi Teoretisk kemi;

    Abstract : The main theme of this thesis is to study effects of different environments on geometric and electronic structures, as well as optical responses, of molecules using time-(in)dependent density functional theory. Theoretical calculations have been carried out for properties that can be measured by conventional and advanced experimental techniques, including one-photon absorption (OPA), two-photon absorption (TPA), surface-enhanced Raman scattering (SERS) and second order nonlinear optical (NLO) response. READ MORE