Sökning: "outcoupling grating"

Hittade 4 avhandlingar innehållade orden outcoupling grating.

  1. 1. Diffractive Optics Design

    Författare :Jörgen Bengtsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; computer-generated waveguide hologram; diffractive optics; fan-out; millimeter wave radiation; proximity effect; optimal-rotation-angle method; kinoform; integrated optics; beam shaping; outcoupling grating; scalar optics;

    Sammanfattning : Diffractive optical elements (kinoforms) change the way light propagates, and can perform very complex tasks. They can split an incident beam into any number of outgoing, and possibly focused, beams (fan-out). LÄS MER

  3. 2. Multifunctional Waveguide Grating Couplers for Integrated Optics

    Författare :Johan Backlund; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis describes a novel waveguide component in integrated optics called a multifunctional grating coupler. It couples light in or out of optical waveguides and provides additional optical functions such as beam splitting, arbitrary focusing, polarization sensing, and wavelength separation (wavelength division demultiplexing). LÄS MER

  4. 3. Grating Based Lasers for Photonic Integration and Surface Emission

    Författare :Peter Modh; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; integrated optics; surface-emitting lasers; laser resonators; optical planar waveguide couplers; unstable-resonator lasers; semiconductor lasers;

    Sammanfattning : This thesis deals with the fabrication and characterization of grating-based integration-compatible semiconductor lasers. Waveguide gratings provide feedback for the laser resonators, and are used to diffract the laser output out of the waveguide for surface-emission. LÄS MER

  5. 4. Grating-Coupled Surface-Emitters --- Highly Directional Outcouplers and Spatially Coherent Lasers

    Författare :Niklas Eriksson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis deals with grating-coupled surface-emitting semiconductor lasers. The work is part of a larger effort that aims at developing semiconductor lasers with built-in beam-forming elements, which eliminate the need for external micro-optics. LÄS MER