Sökning: "coherence length"

Visar resultat 1 - 5 av 40 avhandlingar innehållade orden coherence length.

  1. 1. Electronic and Vibrational Coherence in Photosynthetic and Model Systems

    Författare :Mirianas Chachisvilis; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Kemi; Chemistry; Ultrafast relaxation; Porphyrins; Delocalization; Anisotropy; Wavepacket; Vibrational Coherence; Excitons; Electronic coherence; Energy transfer; Femtosecond spectroscopy; Photosynthesis;

    Sammanfattning : Ultrafast optical response and excitation energy dynamics in light harvesting pigment-protein complexes and in a few model systems have been studied both experimentally and theoretically. Femtosecond light pulses were employed to excite the system and monitor the subsequent time evolution of the transient absorption kinetics and anisotropy. LÄS MER

  3. 2. Retinal ganglion cell examination with Optical Coherence Tomography reflects physiological and pathological changes in the eye and the brain

    Författare :Abbas Al-Hawasi; Neil Lagali; Yumin Link; Per Fagerholm; Per Söderberg; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Retinal ganglion cell; Retinal nerve fiber layer; Optical Coherence Tomography;

    Sammanfattning : The retinal ganglion cell is situated in the inner retina and its axons, composing the retinal nerve fiber layer (RNFL), leave the eye to form the optic nerve. These cells develop embryologically from the forebrain and later during development re-establish connections with different parts of the brain serving different purposes. LÄS MER

  4. 3. Effects of Coherence and Correlations on Transport through Nanostructures

    Författare :Olov Karlström; Matematisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2012:Karlström;

    Sammanfattning : This dissertation deals with the effects of coherence and correlations on transport through nanostructures. Simulations are mainly performed using the second order von Neumann approach, a method capable of dealing with these effects in the presence of higher order tunneling. LÄS MER

  5. 4. Structured Light for Ultrafast Videography

    Författare :Vassily Kornienko; Förbränningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Structured Light; FRAME; Coherence Lifetime Imaging; Optical Diagnostics; Ultrafast Videography; Strukturerad Belysning; FRAME; Koherent Livstidsavbildning; Optisk diagnostik; Ultrasnabb videografi;

    Sammanfattning : Monitoring natural events at ultrafast timescales is a prerequisite for our continued understanding of physical, chemical and biological processes. Due to exponential advancements in knowledge and optical technology, the field of ultrafast videography has seen a sudden uptick in activity beginning in the mid-2010s. LÄS MER

  7. 5. Die Wiedergabe der Wirklichkeit : Textmuster, Kohärenzmarkierung und Redewiedergabe in deutschen und schwedischen Tageszeitungen

    Författare :Dag Sandahl; Tyska; []
    Nyckelord :HUMANIORA; HUMANITIES; “The Reported Reality”; contrastive; German; Swedish; serious newspapers; genres; news; background material; three levels; text patterns; cohesion markers; grammatical and lexical means;

    Sammanfattning : This thesis, “Die Wiedergabe der Wirklichkeit” (“The Reported Reality”), explores from a contrastive perspective what linguistic strategies serious German and Swedish newspapers use in different text genres as they report from reality. Two German – die Frankfurter Allgemeine Zeitung and die Süddeutsche Zeitung – and two Swedish newspapers – Dagens Nyheter and Svenska Dagbladet – are studied. LÄS MER