Sökning: "diffractive optical element"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden diffractive optical element.

  1. 1. Diffractive Optical Elements: Fabrication, Replication, and Applications and Optical Properties of a Visual Field Test

    Författare :Fredrik Nikolajeff; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; perimetry; beam homogenizing; antireflection; high-pass spatial frequency target; proximity effect; electron beam lithography; replication; successive development; diffractive optical element; axicon;

    Sammanfattning : This thesis mainly treats the fabrication, replication and applications of diffractive optical elements. A smaller part deals with optical properties of a visual field test. Diffractive optical elements are computer-generated micro-optic components that use diffraction to manipulate light. LÄS MER

  3. 2. Kinoforms

    Författare :Jörgen Bengtsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; diffractive optics; computer generated hologram; proximity effect compensation; millimeter wave kinoform; kinoform; beam shaping; parallel optical interconnects; laser machining; phase-retrieval algorithm; diffractive optical element;

    Sammanfattning : .... LÄS MER

  4. 3. Transverse mode and beam control in vertical-cavity surface-emitting lasers

    Författare :Hans Martinsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vertical-cavity surface-emitting laser; optical interconnects; diffractive optical element; beam shaping; transverse modes; mode control; semiconductor lasers;

    Sammanfattning : .... LÄS MER

  5. 4. Laser Flare Measurements and Kinoform Applications

    Författare :Anna-Karin Holmér; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fuchs heterochromic uveitis; kinoform; hot embossing; Nd:YAG; laser machining; laser flare meter; aqueous flare; excimer; retroreflector; traffic signs; diffractive optical element; iris angiography;

    Sammanfattning : This thesis has two main parts. The first part treats the construction and use of a laser flare meter (Papers A and B). The second part deals with applications of kinoforms and consists of the sections "Kinoforms in laser machining" (Papers C and D) and "Diffractive retroreflectors" (Paper E). LÄS MER

  7. 5. Design and Performance of Some Components for a Millimeter Wave Imaging Receiver

    Författare :Guillermo F. Delgado Gunckel; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nipi MQW; imaging receiver; lens shaping; diplexer; kinoform; opto-electronic quasi-optical modulation; dielectric lenses; sideband filter; diffractive optics;

    Sammanfattning : This thesis deals with the design and performance of some novel devices for an imaging receiver, operating in the frequency band centered at 100 GHz, to be used in radio astronomy research. The emphasis is given on simple, small and reliable devices in order to reduce the complexity of an already complex receiver. LÄS MER