Essays about: "Dark pulse"

Showing result 1 - 5 of 7 essays containing the words Dark pulse.

1. 1. Effects of Ultrafast Ionization in X-ray Coherent Diffraction Imaging

   University essay from KTH/Kemi

   Author : Arezu Sehati; [2023]
   Keywords : Coherent Diffraction Imaging; X-ray Free Electron Lasers; Refractive index; Core-shell nanoclusters; Rare-gas ionization; Koherent Diffraktionsavbildning; Röntgenfrielektronlaser; Brytningsindex; Core-shell-nanokluster; Ädelgasjonisering;

   Abstract : Koherent Diffraktionsavbildning med en intensiv röntgenpuls från en Frielektronlaser har möjliggjort strukturbestämning av isolerade nanopartiklar som inte går att studera med hjälp av konventionella metoder, så som elektronmikroskopi. En mycket kort pulslängd tillsammans med spridningssignalens beroende av objektets elektroniska struktur medför också möjligheten att studera inducerad ultrasnabb dynamik med denna teknik. READ MORE

3. 2. Pulse Amplitude Reconstruction in the LDMX Hadronic Calorimeter Readout

   University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Partikel- och kärnfysik

   Author : Aksel Draguanov Mihaylov; [2023]
   Keywords : Physics and Astronomy;

   Abstract : The universe shows signs of containing some invisible matter, known as dark matter. There are many possible constituents for dark matter, one such being light dark matter which would interact with ordinary matter through a new mediator force and have masses in the range of a few MeV to GeV. READ MORE

4. 3. Free-Space Dark Pulse Mode-Locked Laser

   University essay from KTH/Tillämpad fysik

   Author : Martin Brunzell; [2021]
   Keywords : Solid State Laser; Sum-frequency generation; Dark pulse; Mode-locked; Laser; Summa-frekvens generation; mörk puls; modlåst;

   Abstract : While the development of bright pulses produced in free space devices can be found in a large set of applications and research equipment all over the world. The production of dark pulses in a free-space device has not been shown prior to this work. READ MORE

5. 4. Test setup for LDMX HCal readout

   University essay from Lunds universitet/Partikel- och kärnfysik; Lunds universitet/Fysiska institutionen

   Author : Joshua Greaves; [2020]
   Keywords : Dark matter; LDMX; dark photon; hadronic calorimeter; photomultiplier tube; Physics and Astronomy;

   Abstract : It is evident from cosmological observations such as the Cosmic Microwave Background, and the motion of galaxies, that the universe consists of approximately 5 times more mass than visible matter can account for. The Light Dark Matter eXperiment (LDMX) will take a unique approach in its hunt for dark matter; it will look for missing momentum signals in electron collisions with a Tungsten target, and will be looking in the sub GeV energy range for evidence of dark matter interactions. READ MORE

6. 5. Dispersion management and characterization of ultrashort laser pulses for the optimization of parametric processes

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Axel Elfving; [2019]
   Keywords : frequency resolved optical gating; optical parametric amplification; difference frequency generation; nonlinear optics; laser pulse compression; lasers; optics; Technology and Engineering; Physics and Astronomy;

   Abstract : This thesis set out to continue the development of a short-wave infrared (SWIR) optical parametric amplifier (OPA). The system is based on a Yb-ber chirped pulse amplification (CPA) laser delivering 400 fs long pulses, centered around 1030 nm, at 200 kHz repetition rate and 40 W average power. READ MORE