Sökning: "stray light"

Visar resultat 1 - 5 av 12 uppsatser innehållade orden stray light.

  1. 1. Development of Spectroscopic Measurements for Raman and Thomson Scattering Diagnostics ——Applications in Combustion and Plasma

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

    Författare :Miaoxin Gong; [2019]
    Nyckelord :Raman scattering; Raman spectroscopy; Thomson scattering; stray light suppression; periodic shadowing; high dynamic range imaging; digital micro-mirror device; DMD; laminar flames; combustion; gas discharge; plasma; laser diagnostics; spectrometer; improved spectroscopy; spectroscopy; Physics and Astronomy;

    Sammanfattning : This thesis work concerns methods for improved spectroscopy including stray-light suppression, dynamic range improvement and signal enhancement. These methods were applied in Raman and Thomson- scattering spectroscopy in combustion and plasma. LÄS MER

  2. 2. A Software Model for MATS Satellite Payload

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Tejaswi Seth; [2018]
    Nyckelord :Noctilucent clouds; swedish satellite; MATS; gravity waves; limb imaging; CCD;

    Sammanfattning : This thesis presents the development of a software model that simulates a payload instrument onboard the MATS satellite. The goal of this model is to provide an understanding of how the instrument impacts the measured data. LÄS MER

  3. 3. Fiber-based Stray Light Suppression in Spectrometers

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

    Författare :Miaoxin Gong; [2017]
    Nyckelord :spectroscopy; spectrometer; stray light; fiber optics; Periodic Shadowing; lock-in analysis; Raman spectroscopy; Physics and Astronomy;

    Sammanfattning : Stray light is known as strong interference in spectroscopic measurements. With the creation of a novel kind of customized fibers, manufactured by the fiber optics group in Jena, Germany, a general experimental solution to this problem is possible. LÄS MER

  4. 4. Development of an Ultra-Sensitive Spectrometer

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

    Författare :Sukant Chaudhry; [2016]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : A high dynamic range imaging (HDRI) spectroscopic instrument was designed and developed in this thesis. Achieving higher measurement accuracy in imaging spectroscopic measurements require both a suppression of the background light (stray light) as well as HDR imaging. LÄS MER

  5. 5. Stray Light Compensation in Optical Systems

    Master-uppsats, Lunds universitet/Matematik LTH

    Författare :Aleksis Pirinen; Angelos Toytziaridis; [2015]
    Nyckelord :stray light; point spread function; deconvolution; image processing; Technology and Engineering;

    Sammanfattning : All optical equipment suffers from a phenomenon called stray light, which is defined as unwanted light in an optical system. Images contaminated by stray light tend to have lower contrast and reduced detail, which motivates the need for reducing it in many applications. LÄS MER