Search for dissertations about: "Fredrik Laurell"

Showing result 1 - 5 of 36 swedish dissertations containing the words Fredrik Laurell.

  1. 1. Second harmonic and sum frequency generation in lithium niobate waveguides

    Author : Fredrik Laurell; Martin Fejer; KTH; []
    Keywords : Fysik; Physics;

    Abstract : .... READ MORE

  2. 2. Optically poled fibers for electro-optic applications

    Author : Joao Manoel Barbosa Pereira; Fredrik Laurell; Walter Margulis; Stavros Pissadaki; KTH; []

    Abstract : The work presented in this thesis shows the development of optically poleddevices for use in electro-optic experiments. In the form of papers published,it describes three optical poling methods: green light poling (Paper I), poling with a UV lamp (Paper II), and corona discharge poling (Paper V). READ MORE

  3. 3. Diode-pumped rare-earth-doped quasi-three-level lasers

    Author : Stefan Bjurshagen; Fredrik Laurell; Markus Pollnau; KTH; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Optics; laser optics; Physics; Fysik;

    Abstract : Many rare-earth-doped materials are suitable for laser operation and this thesis focuses on diode-pumped solid-state lasers employing crystals doped with the trivalent rare-earth ions neodymium (Nd3+), ytterbium (Yb3+) and erbium (Er3+). Especially, the quasi-three-level transitions in Nd and Yb have been studied as well as the eye-safe three-level transition around 1. READ MORE

  4. 4. Domain engineering in KTiOPO4

    Author : Carlota Canalias; Fredrik Laurell; Benoît Boulanger; KTH; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; quasi-phase matching; KTiOPO4; ferroelectric domains; atomic force microscopy; periodic electric field poling; polarization switching; second harmonic generation; Optical physics; Optisk fysik;

    Abstract : Ferroelectric crystals are commonly used in nonlinear optics for frequency conversion of laser radiation. The quasi-phase matching (QPM) approach uses a periodically modulated nonlinearity that can be achieved by periodically inverting domains in ferroelectric crystals and allows versatile and efficient frequency conversion in the whole transparency region of the material. READ MORE

  5. 5. Advanced all-fiber optofluidic devices

    Author : Sebastian Etcheverry Cabrera; Fredrik Laurell; Markus Schmidt; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; NATURVETENSKAP; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Fiber optics; functional fiber probes; optofluidics; microfluidics; plasmonic; all-fiber technology; instrumentation for life-sciences.; Physics; Fysik;

    Abstract : Significant technological advances of the last years have been possible by developments in Optofluidics, which is a field that deals with the integration of optics and microfluidics into single devices.The work described in this thesis is based on five scientific publications related to the use of fiber optic technology to build integrated optofluidic devices. READ MORE