Search for dissertations about: "Carlota Canalias"

Found 5 swedish dissertations containing the words Carlota Canalias.

  1. 1. Domain engineering in KTiOPO4

    University dissertation from Stockholm : KTH

    Author : Carlota Canalias; Fredrik Laurell; Benoît Boulanger; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; quasi-phase matching; KTiOPO4; ferroelectric domains; atomic force microscopy; periodic electric field poling; polarization switching; second harmonic generation; TECHNOLOGY Engineering physics Optical physics; TEKNIKVETENSKAP Teknisk fysik 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

  2. 2. Studies on Domain Dynamics in Nonlinear Optical Ferroelectric Oxide Crystals

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Hoda Kianirad; Fredrik Laurell; Carlota Canalias; Sakellaris Mailis; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

    Abstract : Nonlinear optical frequency conversion is the key technology for modifying laser output radiation, in order to target specific applications. The most powerful technique to obtain tailored second-order nonlinear interactions is the quasi-phasematching (QPM) approach. READ MORE

  3. 3. Advanced nano- and microdomain engineering of Rb-doped KTiOPO4 for nonlinear optical applications

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Charlotte Liljestrand; Carlota Canalias; Sunao Kurimura; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; KTiOPO4; nonlinear optics; MOPO; quasi-phase matching; SHG; ferroelectrics; domain structuring; periodic poling; Physics; Fysik;

    Abstract : Fine-pitch ferroelectric domain gratings are extensively used for generation of light in the visible and near-infrared spectral regions through quasi-phase matched (QPM) frequency conversion. Sub-μm QPM devices enables demonstration of nonlinear optics with counterpropagating waves, a field of nonlinear optics which remains sparsely explored due to the difficulty of fabricatinghigh quality gratings. READ MORE

  4. 4. Studies on Domain Wall Properties andDynamics in KTiOPO4 and Rb-doped KTiOPO4

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Gustav Lindgren; Carlota Canalias; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

    Abstract : KTiOPO4 (KTP) and Rb-doped KTP (RKTP) are two of the most attractive nonlinear opticalmaterials for engineering of periodically poled domain structures, commonly used as frequencyconversiondevices for laser radiation via the quasi-phase matching (QPM) technique. Thesematerials have excellent non-linearity, wide transparency windows and high resistance to opticaldamage. READ MORE

  5. 5. QPM Devices in KTA and RKTP

    University dissertation from KTH Royal Institute of Technology

    Author : Andrius Zukauskas; Carlota Canalias; Moti Katz; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; QPM; periodic poling; KTP;

    Abstract : Even though KTiOPO4 (KTP) is considered to be one of the best nonlinear materials for quasi phase matched (QPM) frequency conversion in the visible and the near-infrared spectral regions, its use is often limited by poor material homogeneity, high ionic conductivity, a considerable linear absorption and photochromatic damage. On the other hand, the improved material homogeneity and the lower ionic conductivity of bulk Rb-doped KTP (RKTP) make this material an ideal alternative for fabrication of fine-pitch QPM gratings, while the arsenate isomorph KTiOAsO4 (KTA) promises a better performance in the green spectral region and adds the advantage of a wider transparency window in the infrared. READ MORE