Search for dissertations about: "lateral confinement"
Showing result 1 - 5 of 18 swedish dissertations containing the words lateral confinement.
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1. Resonant Tunneling in Laterally Confined Quantum Structures
Abstract : In the thesis, three-dimensionally confined resonant tunneling structures were studied experimentally. Two approaches were used for obtaining quantum confinement: gate-defined lateral constriction of double barrier structures, and epitaxial growth of self-assembled quantum dots. READ MORE
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2. Three-Dimensional Metal-Semiconductor Heterostructures for Device Applications
Abstract : Fabrication and characterisation of buried metal contacts in compound semiconductors are demonstrated. The contacts have been investigated due to their usage both as gates in transistors and as active or passive elements in novel devices. READ MORE
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3. Brownian Dynamics Simulations of Macromolecules : Algorithm Development and Polymers under Confinement
Abstract : In this thesis I have used computer simulations to study the structure and dynamics of grafted polymers during confinement. These systems are of importance for understanding e.g. colloidal stability and surface coatings. READ MORE
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4. Design and fabrication of long wavelength vertical cavity lasers on GaAs substrates
Abstract : Vertical cavity surface emitting lasers (VCSELs) are today a commodity on the short wavelength laser market due to the ease with which they are manufactured. Much effort has in the last decade been directed towards making long wavelength VCSELs as successful in the marketplace. READ MORE
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5. Semiconductor Lasers with Gratings Defined by Electron Beam Lithography
Abstract : This thesis deals with the fabrication and characterization of semiconductor lasers with gratings defined by electron-beam lithography (EBL). Both distributed-feedback (DFB) lasers for fiber-optic communication and grating-surface-emitting (GSE) lasers suitable for a number of novel applications, from free-space communication to optical processing, are treated. READ MORE