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High-order harmonics generated through the interaction of atoms and strong laser fields are a versatile, laboratory-scale source of extreme ultraviolet (XUV) radiation on a femtosecond or even attosecond time-scale. In order to be a useful experimental tool, however, this radiation has to be well characterized, both temporally and spectrally. In this paper we discuss how multi-photon, multi-colour

We present a theoretical study of high-order harmonic generation by a slowly driven ''Duffing'' anharmonic oscillator. The power spectra are shown to display a plateau of high harmonics, which ends up with a sharp cutoff. The classical dynamics is analyzed with the adiabatic invariance theorem, which yields a simple interpretation to this characteristic behavior. We compare with the quantum case b

This article discusses the interweaving of queerness, affect and translation in the asylum process, focusing on the role of legal representatives. Through 16 semi-structured interviews with asylum lawyers in Greece, it explores their collaborative work with queer asylum seekers in preparing a “credible” account. Approaching legal preparation as a process of translating applicants’ emotions into wh

A compact, high-repetition rate optical parametric chirped pulse amplifier system emitting CEP-stable, few-cycle pulses with 10 μJ of pulse energy is reported for the purpose of high-order harmonic generation. The system is seeded from a commercially available, CEP-stabilized Ti:sapphire oscillator, delivering an octave-spanning spectrum from 600-1200 nm. The oscillator output serves on the one ha

Adaptation is becoming increasingly significant for public policy and practice in dealing with climate change-related risks and achieving sustainable development. Consequently, the exploration of different ways of assisting successful adaptation has brought under scrutiny the different lifestyles of communities all around the world. Most frameworks adopted to understand adaptation among societies

Streptococcus bovis/Streptococcus equinus complex (SBSEC) is a common cause of infective endocarditis (IE). For IE-pathogens, the capacity to activate and aggregate platelets is believed to be an important virulence mechanism. While the interactions between bacteria and platelets have been described in detail for many Gram-positive pathogens, little research has been carried out with SBSEC in this

https://www.iiiee.lu.se/about-education-iiiee/alumni-network/alumni-stories/career-iiiee-alumnus-logan-strenchock - 2026-05-15

För att undersöka mycket snabba förlopp, likt elektroners rörelser kring atomkärnan, krävs ljuspulser som endast är några hundra attosekunder långa. En attosekund ($10^{-18}$ s) är en miljarddels miljarddels sekund, och förhåller sig således ungefär till en sekund som en sekund förhåller sig till två gånger universums ålder. Attosekundspulser, det vill säga ljuspulser kortare än en femtosekund ($The first aim of this project is to make high-order harmonic (HHG) setups more compact and user-friendly, by including a micro-channel plate (MCP). Simulations of the transmission properties of an MCP has been performed. These simulations displayed introduced structure in the far field, but a very well behaved beam in the near field. Further, the wavefront of the zeroth order diffraction spot of M

The aim of this essay was to examine how school principals view their own and school’s responsibility when a child is suffering and in what way the principals believe that school can promote a favorable development for a child who is suffering. By thematically open interviews of four school principals at various schools in a southern swedish municipality I examined their view on their own and scho

SIMM34 FINAL 220202 1 GRADUATE SCHOOL METHODS COURSES SIMM34 Digital Media Research Version 1.0 – February 2022 SPRING 2022 2 1. WELCOME SIMM34 DIGITAL MEDIA RESEARCH Contact info Graduate School e-mail: master@sam.lu.se Home page: graduateschool.sam.lu.se Facebook: tinyurl.com/LUgradschoolFB Student Union Home page: samvetet.org Lund University Home page: http://lunduniversity.lu.se The universit

https://www.graduateschool.sam.lu.se/sites/graduateschool.sam.lu.se/files/2022-02/SIMM34%20FINAL%20220202.pdf - 2026-05-16

Innovation is a key enabler for climate change mitigation and adaptation, while also supporting broader economic and societal development goals. This research theme investigates the complex social, institutional, and political dynamics that shape and impact innovation processes in Global South contexts. These diverse settings – for instance large informal sector, resource constraints and complex i

https://www.circle.lu.se/innovation-global-south - 2026-05-15

Som du är behörig till efter godkänd kandidatnivå Avancerad nivå innebär master- eller magisternivå. För att vara behörig till kurser på avancerad nivå måste du först ha blivit godkänd på kandidatnivå. Kurser på avancerad nivå ger en fördjupning både i ämnets bredd och möjlighet att ytterligare specialisera sig i en utvald frågeställning utifrån det ämnets specifika perspektiv. Masterkurser (Avanc

https://www.soc.lu.se/fristaende-kurser/masterkurser-avancerad-niva - 2026-05-15