Sökning: "VCL"

Hittade 4 avhandlingar innehållade ordet VCL.

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

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

    Sammanfattning : 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. LÄS MER

  3. 2. Cellular responses to the DNA damaging cytolethal distending toxin

    Författare :Lina Guerra; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Cytolethal distending toxin (CDT) is a genotoxin, which belongs to a group of bacterial protein toxins called cyclomodulins. These are characterized by their interference with the eukaryotic cell cycle. CDT causes DNA damage, which induces cell cycle arrest and apoptosis. LÄS MER

  4. 3. Epitaxy of GaAs-based long-wavelength vertical cavity lasers

    Författare :Carl Asplund; KTH; []
    Nyckelord :gainnas; ingaas; quantum wells; movpe; mocvd; vertical cavity laser; bcsel; long-wavelength; epitaxy; xrd; dbr;

    Sammanfattning : Vertical cavity lasers (VCLs) are of great interest aslow-cost, high-performance light sources for fiber-opticcommunication systems. They have a number of advantages overconventional edge-emitting lasers, including low powerconsumption, efficient fiber coupling and wafer scalemanufacturing/testing. LÄS MER

  5. 4. On osmolality and sperm function during processing for assisted reproduction

    Författare :Emma Holmes; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Deep basic knowledge about sperm physiology is relevant and important to optimize the outcome of procedures used during Assisted Reproductive Technologies (ART) to select spermatozoa for fertilization. More specifically, this study examined osmolality changes and consequences for sperm motility and sperm selection in the laboratory. LÄS MER