Essays about: "Simon Ek"

Found 5 essays containing the words Simon Ek.

  1. 1. Distributed Temperature Sensing Using Phase-Sensitive Optical Time Domain Reflectometry

    University essay from KTH/Tillämpad fysik

    Author : Simon Ek; [2020]
    Keywords : Applied physics; Distributed optical fiber sensing; Rayleigh scattering; OTDR; phase-OTDR; Temperature; Refractive index; Strain; Correlation; RISE; Single mode fiber; SMF; Tillämpad fysik; Distribuerad optisk fibermätning; Rayleigh-spridning; OTDR; phase-OTDR; Temperatur; Brytningsindex; Töjning; RISE; Korrelation; Singelmodfiber; SMF;

    Abstract : This thesis explores and evaluates the temperature measuring capabilities of a phase-sensitive optical time-domain reflectometer (φ-OTDR), which exploits Rayleigh backscattering in normal single mode optical fibers. The device is constructed and its setup explained, and a protocol for making temperature measurements with it is developed. READ MORE

  3. 2. Evaluation of the wavefronts and spatial structures of ultrashort pulses passing through a micro-channel plate

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

    Author : Simon Ek; [2019]
    Keywords : high-order harmonic generation; HHG; micro-channel plate; MCP; attophysics; Physics and Astronomy;

    Abstract : The first aim of this project is to make high-order harmonic (HHG) setups more compact and user-friendly, by including a micro-channel plate (MCP). Simulations of the transmission properties of an MCP has been performed. These simulations displayed introduced structure in the far field, but a very well behaved beam in the near field. READ MORE

  4. 3. Interferometer Design for Attosecond Experiments

    University essay from Lunds universitet/Fysiska institutionen

    Author : Simon Ek; [2015]
    Keywords : FRED; attophysics; atomic physics; stability; simulations; MATLAB; interferometer design; interferometers; error propagation; Physics and Astronomy;

    Abstract : Resolving fast events, such as electron dynamics, requires short light pulses. To this date the shortest available light pulses are created using High-order Harmonic Generation (HHG) and have a duration of a few hundred attoseconds (1 as = $10^{-18}$ s). READ MORE

  5. 4. Kan hårdare gallring kring huvudstammarna gynna dimensionsutvecklingen och därmed minska omloppstiden för den svenska eken?

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Simon Edberg; Anton Hammarström; [2013]
    Keywords : Quercus robur; Diametertillväxt; Ädellöv; Skötselmetod; Volymtillväxt;

    Abstract : Ett problem med ekproduktion i Sverige är att trädslaget har en förhållandevis lång omloppstid i jämförelse med övriga trädslag. Spekulationer har funnits om man genom en hårdare gallring kan påskynda ekarnas tillväxt och skapa en effektivare ekskogsskötsel. READ MORE

  6. 5. FSC-Fairtrade certifierade trävaror : en marknadsundersökning av två byggvaruhandlare och deras kunder

    University essay from SLU/Dept. of Forest Products

    Author : Simon Ek; [2012]
    Keywords : FSC; Fairtrade; Miljömärkning; Byggvaruhandeln; Eco labeling; builders merchants;

    Abstract : Mellan 2011 och 2013 driver Fairtrade Labeling Organizations International (FLO) och Forest Stewardship Council (FSC) International Center ett pilotprojekt tillsammans. Syftet är att ge småbrukare i utvecklingsländer tillgång till en västerländsk marknad som kan ge dem skäligt betalt för deras skogsråvara. READ MORE