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Summary of Fredrik Karlsson's activities


My research interest is mainly directed towards electronic excitations in semiconductor quantum structures, such as quantum dots or wires, and their optical properties probed by photoluminescence-spectroscopy based techniques. Modeling, including k·p theory, configuration interactions and finite-difference-time-domain simulations, complements the experimental investigations. A particular focus is devoted to the optical polarization and its relation to the electronic structure.

A better understanding of the optical properties of quantum structures is vital for developing brighter and more energy efficient light sources. Moreover, a single quantum dot acts as non-classical light source, emitting single or correlated photons, of interest for future cryptography and computing applications.

Selected publications

Complete list of peer-reviewed articles at researcherID.com (ISI).

Supervision of students

Current projects and funding

  • Carl Tryggers Foundation: Optimized light extraction and emission rate control of pyramidal quantum emittersPrincipal investigator (2016-2019)

Current Teaching

Undergraduate and Master courses
  • TFYY47 Semiconductor physics (6  ECTS) for Y4-5, MFYS and MPNlecturer and examiner
  • TFYA15 Models in physics (8  ECTS) for IT1lecturer and examiner 

In addition, I participate as lecturer in TFFM12 Perspectives on physics (2 hp) and TFYA43 Nanotechnology (6 hp)

PhD courses

  • Semiconductor Physics I & II (8+8 ECTS), course designer, examiner and lecturer (shared)
  • TF1004 Optical properties of semiconductor nanostructures (7.5  ECTS), course designer, examiner and lecturer
  • Many body effects in quantum dots (6  ECTS), course designer and examiner

Other teaching related activities

  • Responsible for the second semester of the IT engineering program
  • Responsible for physics related study visits at IFM
Fredrik Karlsson
Associate Professor (Docent)

Senior Lecturer,
Head of Agora Materiae,
Unit Manager,
Information Manager


E-mail: freka@ifm.liu.se
Phone: +46 (0)13 28 25 33

Room G326 (Physics building)

Semiconductor Materials, IFM
Linköping University
Linköping, Sweden


Responsible for this page: Fredrik Karlsson
Last updated: 02/13/18