Photonics and Semiconductor Nanophysics (PSN)

In the materials and components area, the research at COBRA revolves around quantum mechanics – the field of research that studies physical realities at the atomic level of matter, such as molecules and atoms, and the subatomic level, such as electrons and protons. Most of the work involves the nanoscale: a billionth of a meter (10-9 m). The phenomena studied are ultrafast optical effects in the range of femtoseconds (fs) – the billionth part of a microsecond, or 10-15 of a second. The aim is to use fundamental physical properties in the service of high-speed optical data processing and communication.

In this context, the Photonics and Semiconductor Nanophysics Group is focussed on the epitaxial growth, the scanning probe analysis, and the optics of artificial low-dimensional semiconductor nanostructures, with a present emphasis on quantum dots and photonic bandgap crystals. The research activities of the group, which are strongly interrelated, are listed below.

Subjects of interest include:

  • Scanning Probe Analysis of semiconductor nanostructures: Imaging of semiconductor quantum dots and magnetic impurities.
  • Epitaxial growth: Lateral ordering of III/V quantum dots.
  • Nanophotonics: InP-based (tunable) photonic bandgap crystals.
  • Ultrafast Optics of III/V semiconductor nanostructures: Electromagnetic coupling of quantum dots and all-optical switching.

The Photonics and Semiconductor Nanophysics group collaborates with the Optoelectronic Devices group of Prof. M.K. Smit and the Electro-Optical Communication Systems group of Prof. A.M.J. Koonen at the Department of Electrical Engineering on photonic crystals, femtosecond all-optical switching, and photonic integration of components based on III/V semiconductors.

The group is a member of the European Network of Excellence SANDiE, which focuses on the exploration and application of self-assembled nanostructures, the STREPnetwork ASPRINT on Advanced nanoprobing, the European Network of Excellence ePIXnet on photonic integration, the STREPnetwork PICMOS on photonic layers on a Si-CMOS, the "Towards Ultrafast Communication" consortium within the Dutch Freeband program, and participates in the national lCES/bsik programs Nanolmpuls and NanoNed.

For more information on Photonics and Semiconductor Nanophysics (PSN)please go to: