Sökning: "andreas w"

Visar resultat 1 - 5 av 16 uppsatser innehållade orden andreas w.

  1. 1. III-V semiconductor waveguides for application in nonlinear optics.

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Andreas Charalampous; [2022]
    Nyckelord :InGaP; optical waveguides; integrated optics; quantum nonlinear optics; SHG; SPDC; InGaP; optiska vågledare; integrerad optik; icke-linjär kvantoptik; SHG; SPDC;

    Sammanfattning : This thesis presents studies on III-V semiconductor waveguides with particular emphasis on second-order optical nonlinearity. The nonlinear processes that were investigated in this thesis are the Second Harmonic Generation (SHG) and the Spontaneous Parametric Down-Conversion (SPDC). LÄS MER

  3. 2. Space Heat Power Demand for Existing Buildings : Feasibility, Improvement-Measures, and Impact on Climate Performance Using a Swedish Multi-Dwelling Building as Case Study

    Master-uppsats, Högskolan i Gävle/Energisystem och byggnadsteknik

    Författare :Andreas Holmén; [2022]
    Nyckelord :;

    Sammanfattning : The most commonly used indicators of energy performance of existing buildings in Sweden, Specific Energy Use (SEU) and Primary Energy Use (PEU), are very rough measures that does not account for short term effects and therefore they are not necessarily well suited to evaluate climate performance of existing buildings. In this thesis the similar but slightly different indicators Miljöbyggnad Heat Power Demand (MHPD) (Värmeeffektbehov in Swedish) and Feby Heat Loss Number (FHLN) (Värmeförlusttal in Swedish), both indicators of Space Heat Power Demand (SHPD), has been evaluated as complementary indicators to SEU and PEU. LÄS MER

  4. 3. Utvärdering av kommersiell TEG-enhet på en värmeplatta : Generering av elektricitet från temperaturskillnader

    Kandidat-uppsats, Högskolan Dalarna/Institutionen för information och teknik

    Författare :Andreas Svensson; [2021]
    Nyckelord :Energy technology; Seebeck effect; TEG; waste heat; wood-burning stove; fluid mechanics; thermodynamics; power; current; voltage; electrical engineering; heat plate; Energiteknik; Seebeckeffekt; TEG; spillvärme; vedkamin; strömningslära; termodynamik; effekt; ström; spänning; värmeplatta; ellära;

    Sammanfattning : Att minska energianvändningen är något det pratats mer och mer om de senaste åren. Det finns olika sätt att minska energianvändningen på och ett av dessa är att återvinna värmeenergi. Det kan gälla både spillvärme och nyttig värme. Detta går att tillämpa i industrin, transportsektorn, hushåll och till vardags. LÄS MER

  5. 4. State and Process Tomography : In Spekkens' Toy Model

    Master-uppsats, Linköpings universitet/Informationskodning

    Författare :Andreas Andersson; [2020]
    Nyckelord :Spekkens Toy Model; Quantum information; Tomography; Quantun Simulation Logic; Quantum computation;

    Sammanfattning : In 2004 Robert W. Spekkens introduced a toy theory designed to make a case for the epistemic view of quantum mechanics. But how does Spekkens’ toy model differ from quantum theory? While some differences are well-established, we attempt to approach this question from a tomographic point of view. LÄS MER

  7. 5. Towards the control of photo-ionization with electron wave-packet interferences

    Kandidat-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Andreas Stokkeland; [2020]
    Nyckelord :XUV attosecond pulses; photoelectron distribution; photoionization; phase shift; electron wave-packet interference; infrared field; IR-field; frequency components; Fourier transform; XUV photons; frequency domain; Physics and Astronomy;

    Sammanfattning : In this work the photoelectric effect is explored through simulations of the phase shift that an IR-field can induce into an electron wave packet and the photoelectron distribution over frequency components that is produced in the photoionization of an atom with a attosecond pulses made of XUV photons. The IR-field is sent along two attosecond pulses made of XUV photons towards a 3D momentum spectrometer were there is a gas that can be photoionized and the photoelectrons can be measured. LÄS MER