Search for dissertations about: "Nonlinear optical materials"

Showing result 1 - 5 of 51 swedish dissertations containing the words Nonlinear optical materials.

  2. 1. Nonlinear response in engineered optical materials

    Author : Gustav Strömqvist; Valdas Pasiskevicius; Peter Smith; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; nonlinear optics; nonlinear index of refraction; double tungstates; periodic poling; KTiOPO4; quasi-phase matching; parametric down-conversion; mirrorless optical parametric oscillators;

    Abstract : Material and structure engineering are increasingly employed in active optical media,in this context defined as media capable of providing laser or/and optical parametric gain. For laser materials, the main aim of the engineering is to tailor the absorption and emission cross sections in order to optimise the laser performance. READ MORE

  4. 2. Short Pulses in Engineered Nonlinear Media

    Author : Stefan Holmgren; Fredrik Laurell; Derryck Reid; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; nonlinear optics; KTiOPO4; frequency conversion; mode-locked lasers; ultra-fast lasers; visible lasers; short pulses; ultrafast nonlinear optics; diagnostic applications of nonlinear optics; nonlinear optical materials; Physics; Fysik;

    Abstract : Short optical pulses and engineered nonlinear media is a powerful combination. Mode locked pulses exhibit high peak powers and short pulse duration and the engineered ferro-electric KTiOPO4 facilitates several different nonlinear processes. READ MORE

  5. 3. Nonlinear Optical Materials Structural Studies of Alkali Titanium Phosphates

    Author : Stefan Norberg; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; nonlinear optical materials; alkali titanium phosphates; phase transition; alkaline cation shifts; rare-earth langbeinites; doped KTP isostructures;

    Abstract : Crystals are beautiful, not only as pieces of jewellery, but also for their intrinsic properties, which are of significant scientific and technological importance. Ferroelectric materials are extremely versatile, since they may be combined with piezoelectric or electrooptic devices for use as filters, oscillators, memories, light detectors, and displays. READ MORE

  6. 4. Going for gold : A spectroelectrochemical and catalytic study of gold materials

    Author : Sara Boscolo Bibi; Hansson Tony; Sergey Koroidov; Henrik Öström; Richard Kramer Campen; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Gold oxidation; oxide-derived metals; electrochemistry; X-ray spectroscopy; optical nonlinear spectroscopy; AuNPs supported in metal oxides; mass spectrometry; kemisk fysik; Chemical Physics;

    Abstract : With the increase in demand for renewable energy, understanding chemical processes is essential for improving the design of catalysts in order to achieve better performance. This thesis summarises the experimental investigation of three types of catalytic gold materials: gold oxide formed from gold films, oxide-derived gold (OD-Au) produced from gold films, and gold nanoparticles supported on metal oxides. READ MORE

  7. 5. Nonlinear materials for optical power limiting : characterization and modelling

    Author : Hampus Lundén; Mikael Lindgren; Cesar Lopes; Bernd Eberle; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : High power laser pulses can be a threat to optical sensors, including the human eye. Traditionally this threat has been alleviated by colour filters that block radiation in chosen wavelength ranges. READ MORE