Sökning: "lasers"

Visar resultat 11 - 15 av 130 uppsatser innehållade ordet lasers.

  1. 11. Simulation, Design, and Implementation of a Narrow Linewidth Ytterbium Fiber MOPA System at 1087 nm

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Berkay Efilti; [2023]
    Nyckelord :Applied Physics; Laser Physics; Fiber Lasers; Fiber Amplifiers;

    Sammanfattning : This thesis focuses on simulating, designing, and characterizing a narrow-linewidth continuous-wave (CW) Ytterbium (Yb) master oscillator fiber amplifier (MOFA) system. The primary goal was to achieve a watt-level output at 1087 nm with a narrow 1 GHz linewidth, making the MOFA well-suited for serving as a pump source in Terahertz (THz) generation experiments. LÄS MER

  3. 12. Focal Spot Optimization Using Spatial Light Modulation and a Phase Retrieval Algorithm

    Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Författare :Robert Petersen; [2023]
    Nyckelord :Spatial Light Modulation; Phase Retrieval Algorithm; Focal Spot Optimization; Adaptive Optics; Wavefront Sensing; Lasers; Physics and Astronomy; Technology and Engineering;

    Sammanfattning : Aberrations to the wavefront of a laser beam reduce the quality of the focal spot and are generally undesired. This project is aimed at determining the aberrations of laser beams by using a phase retrieval algorithm and to show that it is possible to correct the aberrations with a spatial light modulator to optimize the focal spot. LÄS MER

  4. 13. Strain/Stress profile investigation of crystals mounted in an optical instrument via FEM simulation

    Master-uppsats, Lunds universitet/Industriell Produktion

    Författare :Matheus Amarante Machado; [2023]
    Nyckelord :Modeling; Abaqus; Y2SiO5; Finite Element Modeling; Strain; Stress; Yttrium Orthosilicate.; Technology and Engineering;

    Sammanfattning : Abstract This work is one of a series of related papers that were made in Lund University. They were done to analyze in a multi scalar way the Yttrium Orthosilicate crystals (YSO), analyzing the variation of material properties stemmed from the mounting, composition and other parameters in the optical properties of Yttrium Orthosilicate crystals. LÄS MER

  5. 14. Development of MOKE spectrometer

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Materialfysik

    Författare :Sebastian Åberg; [2023]
    Nyckelord :MOKE; Spectroscopy;

    Sammanfattning : The magneto-optical Kerr effect (MOKE) describes the change in polarization of light reflected from a magnetic surface. This change is proportional to the magnetization and depends on the wavelength of light. Because of these properties, MOKE has found use as a tool to probe magnetism in matter. LÄS MER

  7. 15. Rökpartiklars storleks beroende av syrehalt

    Kandidat-uppsats, Lunds universitet/Avdelningen för Brandteknik

    Författare :Karl Wendt Höjer; [2022]
    Nyckelord :Particle size – Hypoxic – CACC – Reducerad syrehalt – Cone calorimeter – Multi-wavelength light transmission measurements - Partikelstorlek; Technology and Engineering;

    Sammanfattning : Particle size can be an important variable to know in many different areas, be it smoke simulations, toxicity of materials or tests of face masks. Fires in a reduced oxygen environment can occur for ventilation-controlled fires or in areas with artificially lowered oxygen levels. LÄS MER