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Coherent multidimensional spectroscopy (CMDS) is the most complete nonlinear optical technique based on the interaction of multiple short laser pulses with matter. It has grown to play a significant role in studies of optoelectronic materials and pigment protein complexes. In this work we apply CMDS to investigate electronic excitations and their dynamics in semiconductor nanocrystals, so called q
Understanding competing instabilities in systems with correlated fermions remains one of the holy grails of modern condensed matter physics. Among the fermionic lattice models used to this effect, the extended Hubbard model occupies a prime place due to the potential relevance of its repulsive and attractive versions for both electronic materials and artificial systems. Using the recently introduc
Metalloenzymes have the ability to enhance oxidation reactions within biological systems, which have spurred efforts to synthesize biomimetic FeII complexes. That being said, two N4Py-derivative ligands N-((6-(4-chlorophenyl)pyridine-2-yl)methyl)-1,1-di(pyridine-2-yl)-N-(pyridine-2-ylmethyl)methanamine (L1) and N,N-bis((6-(4-chlorophenyl)pyridin-2-yl)methyl)-1,1-di(pyridin-2-yl)methanamine (L2) we
Solid Mechanics was the first division established at LTH, now the technical faculty at Lund University. The first head of the division, Bertam Broberg, was also the first professor at LTH and even dean. He was instrumental in the establishment of the LTH campus. The Division of Solid Mechanics is part of the Department of Construction Sciences. The research at the Division of Solid Mechanics (Hål
https://www.construction.lth.se/about/solid-mechanics - 2026-10-11
High-order harmonic generation in gases by use of femtosecond lasers is a source of ultrashort pulses in the extreme-ultraviolet (XUV). For many applications it is necessary to select radiation of only one specific harmonic order without affecting the duration of the ultrashort pulse. A three-grating monochromator that meets this demand has been designed and modeled by ray tracing as well as by wa
A general approach to the modifications of the spectrum of a laser pulse interacting with matter is elaborated and used for spectral diagnostics of laser wakefield generation in guiding structures. Analytical predictions of the laser frequency red shift due to the wakefield excited in a capillary waveguide are confirmed by self-consistent modeling results. The role of ionization blue shift, and no
The goal of this master thesis was to identify an alternative to shaft encoders as means of achieving accurate motor velocity and position control for sliding door systems. While the company had previously explored methods like using backEMF, this thesis investigates counting voltage ripples during the commutation process in a brushed DC motor. During commutation, one or two pairs of commutator se
In this thesis, a method for producing few-cycle short wavelength infrared pulses is presented. The pulses are created by down converting the 800 nm output of a Ti:Sapphire laser in an optical parametric amplifier to 1300 nm, and spectrally broadened in a hollow core fiber in order to obtain a short transform limited pulse duration. Further, they are to be compressed using the anomalous dispersion
Singleshot polychromatic coherent diffractive imaging is performed with a high-intensity high-order harmonic generation source. The coherence properties are analyzed and several reconstructions show the shot-to-shot fluctuations of the incident beam wavefront. The method is based on a multi-step approach. First, the spectrum is extracted from double-slit diffraction data. The spectrum is used as i
This dissertation deals with design and characterization of functional structures for scattering of electromagnetic waves. An abundance of these structures can be found in nature, such as the structural coloration in the feathers of a peacock, the scales of butterflies and the shell of scarab beetles. Human design of structures providing specific interactions with electromagnetic waves have a long
The University of Latvia consistently retains the position of the national, leading, and most influential higher education institution in Latvia. In terms of the total number of students, the University of Latvia is also the largest university in the country. It is the largest comprehensive university in Latvia with a prominent standing both in the development of the entire education system and in
https://www.norca.lu.se/partners/university-latvia - 2026-10-11
9 June 2021, at 10:00 A presentation about Gibson / Martelli’s latest research and work investigating VR performance technologies.Location: Online via Zoom“Examining ideas of player, performer and visitor, european art duo Gibson / Martelli playfully address the position of the self – intertwining tropes of videogames and traditions of figure & landscape. Working with live simulation, performance
The Centre for East and South- East Asian Studies Work Plan 2020 LUND UNIVERSITY | CENTRE FOR EAST AND SOUTH-EAST ASIAN STUDIES 2 CENTRE FOR EAST AND SOUTH-EAST ASIAN STUDIES WORK PLAN • 2020 2020 Work Plan for the Centre for East and South-East Asian Studies GENERAL INTRODUCTION During the year the Centre will continue to focus on adapting to its new organizational role within the Faculties of Hu
https://www.ace.lu.se/sites/ace.lu.se/files/work_plan_2020.pdf - 2026-10-13
Properties of the Higgs boson are measured in the two-photon final state using 36.1 fb-1 of proton? proton collision data recorded at ffiffi √s = 13 TeV by the ATLAS experiment at the Large Hadron Collider. Cross-section measurements for the production of a Higgs boson through gluon-gluon fusion, vectorboson fusion, and in association with a vector boson or a top-quark pair are reported. The signa
The optical properties of III-V semiconductor nanowires for optical devices have been investigated by photoluminescence spectroscopy, cathodoluminescence spectroscopy and cathodoluminescence imaging. The material systems that have been studied include the nitrides (InN, GaN and AlN) and ternaries, and a few common phosphides and arsenides. Due to the different optical properties of the materials,
Controlling polymer thin-film morphology and crystallinity is crucial for a wide range of applications, particularly in thin-film organic electronic devices. In this work, the crystallization behavior of a model polymer, poly(ethylene oxide) (PEO), during spin-coating is studied. PEO films were spun-cast from solvents possessing different polarities (chloroform, THF, and methanol) and probed via i
