Sökning: "michelson interferometer"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden michelson interferometer.

  1. 1. Towards a setup for narrowband terahertz generation through difference-frequency mixing of chirped ultrashort pulses

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

    Författare :Isa Clementsson; [2023]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Terahertz radiation is a useful tool for inducing lower-energy excitations in matter, where it can be used to cause structural changes through direct interaction with the crystal lattice. Sub-picosecond optical pulses can be used to generate intense broadband terahertz pulses through optical rectification in nonlinear crystals, reaching peak electric fields of several MV/m and conversion efficiencies as high as a few percent. LÄS MER

  3. 2. Ultrafast Transient coherent Raman Microscopy(TRaM)

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

    Författare :Eric Nilsson; [2019]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : The aim of this project was to construct a measurement setup to be able to measure the decoherence time of optical phonons. Optical phonons lose coherence by decaying to intermediate phonons and eventually to acoustic phonons which can carry heat, which is why measuring the coherence time of optical phonons is important to characterizing heat flow on short time scales. LÄS MER

  4. 3. Displacement Estimation for Homodyne Michelson Interferometers Based on Particle Filtering

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för systemteknik

    Författare :Petter Ersbo; [2018]
    Nyckelord :interferometry; particle filter; state estimation;

    Sammanfattning : The current method for displacement estimation for homodyne Michelson interferometer is biased and gives little information about the statistical properties of the estimate. This thesis suggests an alternative estimation method, which has the potential to address these shortcomings. LÄS MER

  5. 4. Optical sensors for mechanomyography and tissue chromophores

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

    Författare :Emil Ljungberg; [2013]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : The mechanomyogram (MMG) is a mechanical oscillations observable on the surface of the skin as a muscle contracts. Measurement of the MMG utilizing contact sensors with a weight greater than 6 g has proved to interfere with the measurement. Use of optical displacement sensors without direct contact to the skin would remove this deficiency. LÄS MER

  7. 5. FTIR method for analysis of synthesis gas

    M1-uppsats, Institutionen för fysik, kemi och biologi; Tekniska högskolan

    Författare :Marina Broberg; [2013]
    Nyckelord :FTIR; infrared spectroscopy; synthesis gas; syn gas; vibration mode; symmetric operation; Michelson interferometer;

    Sammanfattning : The research institute ETC in Piteå is working with energy technical research and development. Today, much work revolves around research about renewable sources for fuel. In one project, biomass such as wood pellet is heated up while producing synthesis gas. The synthesis gas is then analyzed using three different GC techniques. LÄS MER