Search for dissertations about: "Jonas Hellström"

Found 3 swedish dissertations containing the words Jonas Hellström.

  1. 1. Nanosecond optical parametric oscillators and amplifiers based on periodically poled KTiOPO4

    University dissertation from Fysiska institutionen

    Author : Jonas Hellström; KTH.; [2001]
    Keywords : optical parametric oscillators; optica parametric amplifiers; quasi-phasematching; KTiOPO4; nonlinear optics; frequency conversion; periodic electric field poling; ferroelectrics; high-order second harmonic generation; electro-optic effect;

    Abstract : Optical parametric oscillators (OPOs) and optical parametricamplifiers (OPAs) constitute a class of optical frequencyconverting devices that have many possible applications, e.g.in range finding, molecular spectroscopy and medicine. READ MORE

  2. 2. Novel materials for Yb and Er-Yb doped microchip lasers

    University dissertation from Stockholm : KTH

    Author : Jonas Hellström; KTH.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; mid-IR lasers; laser materials; TECHNOLOGY Engineering physics Optical physics; TEKNIKVETENSKAP Teknisk fysik Optisk fysik;

    Abstract : The objective of this thesis has been to investigate novel host material configurations for high-power end-pumped Er-Yb co-doped, or Yb doped microchip lasers and try to increase their performance. In Er-Yb co-doped systems, the main limitation is the thermal shortcomings of the phosphate glass host material. READ MORE

  3. 3. On diode-pumped solid-state lasers

    University dissertation from Stockholm : KTH

    Author : Jonas Hellström; KTH.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; near-infrared lasers; end-pumped lasers; Q-switching; erbium; ytterbium; GdCOB; KGW; KYW; Co:MALO; laser materials; thermal lensing; end-pumping; spectroscopy; conical refraction; volume Bragg gratings; holographic gratings; laser tuning; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Abstract : The research that is presented in this thesis can be divided into two major parts. The first part concerns longitudinally pumped, bulk Er-Yb lasers. In these lasers, the main limitation is the thermal shortcomings of the phosphate glass host material. READ MORE