Search for dissertations about: "cavity"

Showing result 1 - 5 of 519 swedish dissertations containing the word cavity.

  1. 1. Long-Wavelength Vertical-Cavity Lasers Materials and Device Analysis

    University dissertation from Kista : Mikroelektronik och informationsteknik

    Author : Sebastian Mogg; KTH.; [2003]
    Keywords : VCL; VCSEL; vertical-cavity laser; semiconductor laser; long-wavelength; DBR; characterization; analysis; InP; InGaAs; quantum well; numerical modeling;

    Abstract : Vertical-cavity lasers (VCLs) are of great interest as lightsources for fiber-optic communication systems. Such deviceshave a number of advantages over traditional in-plane laserdiodes, including low power consumption, efficient fibercoupling, on-chip testability, as well as potential low-costfabrication and packaging. READ MORE

  2. 2. Cavity enhanced optical sensing

    University dissertation from Umeå : Umeå universitet

    Author : Isak Silander; Umeå universitet.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Optical resonators; Fiber Laser; Parametric oscillators; Optical frequency comb; Infrared; Spectroscopy heterodyne; Spectroscopy molecular; Absorption; Dispersion; Lineshapes; Optical standards and testing; Refractivety measurements;

    Abstract : An optical cavity comprises a set of mirrors between which light can be reflected a number of times. The selectivity and stability of optical cavities make them extremely useful as frequency references or discri­mi­nators. READ MORE

  3. 3. Cavity Field Control for Linear Particle Accelerators

    University dissertation from Department of Automatic Control, Lund Institute of Technology (LTH)

    Author : Olof Troeng; Lund University.; Lunds universitet.; Lund University.; Lunds universitet.; [2019-11-05]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Particle accelerators; Cavity field control; LLRF; Complex-coefficient systems; Q design; Disturbance-rejecting peak filters;

    Abstract : High-energy linear particle accelerators enable exploration of the microscopic structure of pharmaceuticals, solar cells, fuel cells, high-temperature superconductors, and the universe itself. These accelerators accelerate charged particles using oscillating magnetic fields that are confined in metal cavities. READ MORE

  4. 4. A Study of Turbulent Natural Convection Boundary Layers Using Large-Eddy Simulation

    University dissertation from Department of Automatic Control, Lund Institute of Technology (LTH)

    Author : Darioush Gohari Barhaghi; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; natural convection boundary layer; DNS; LES; radiation heat transfer; free convection; cavity; vertical cylinder;

    Abstract : The structure of turbulent natural convection boundary layers in differentgeometries and the effect of the buoyancy on a mixed convection boundarylayer are investigated. These geometries comprise a vertical finitecylinder, a vertical infinite channel, a cavity and a vertical finite channel. READ MORE

  5. 5. High temperature performance of materials for future power plants

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Junjing He; KTH.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Austenitic stainless steels; Nickel based superalloys; Low cycle fatigue; Creep-fatigue; Creep cavitation; Grain boundary sliding; Cavity nucleation; Cavity growth; Creep rupture strength; Advanced ultra-supercritical power plants.; Materials Science and Engineering; Teknisk materialvetenskap;

    Abstract : Increasing energy demand leads to two crucial problems for the whole society. One is the economic cost and the other is the pollution of the environment, especially CO2 emissions. Despite efforts to adopt renewable energy sources, fossil fuels will continue to dominate. READ MORE