Collaborative Research Center Sfb 787 „Semiconductor NanoPhotonics“
At the beginning of 2008 a new Collaborative Research Center (Sonderforschungsbereich) 787 „Semiconductor NanoPhotonics: Materials, Models, Devices“ together with an “Integrated Postgraduate School” has been launched. For the initial phase (2008-2011) the German Research Foundation (DFG) is funding the network with about € 11 million, with a planned duration of twelve years and an expected total funding of € 35 million. The Collaborative Research Center Sfb 787 will support more than 100 scientists from Berlin and Magdeburg, who will study novel photonic devices, nanomaterials and mathematical models in the field of nanophotonics.
The Ferdinand-Braun-Institut considerably contributes to the Sfb 787 within two projects:
The realization of highly efficient InGaN nanomaterials and the demonstration of high power GaN-based laser diodes in the blue and green spectral range is the goal of project A1, “Materials for high brilliance green laser diodes”. Besides fundamental investigations of the growth processes for InGaN quantum wells with high indium content, the epitaxial growth of InGaN quantum dots and growth on nonpolar GaN surfaces will be investigated. The project is an important building block for the activities in the area of GaN optoelectronics at the FBH, which are co-developed together with the TU Berlin.
In project C5, „High brilliance semiconductor lasers“, the physics and the technological basis for the next generation of high power laser diodes will be investigated. The goal is to develop semiconductor lasers structures that enable extremely small beam divergence (< 7°) and new approaches for wavelength stabilization. These structures are based on photonics crystals which are embedded in optical microcavities and include multiple quantum well and quantum dot structures for light generation. The investigation will initially focus on the wavelength range between 800 nm - 1100 nm. This wavelength range provides the biggest potential for future applications and all the building blocks for these new diode lasers are well understood. The project is integrated into the research activities of the FBH business area “Diode Lasers” which focuses on high brilliance and high efficiency laser diodes.
Partners:
- Technische Universität Berlin
- Humboldt-Universität zu Berlin
- Otto-von-Guericke-Universität Magdeburg
- Ferdinand-Braun-Institut für Höchstfrequenztechnik
- Fraunhofer-Institut für Nachrichtentechnik Heinrich-Hertz-Institut
- Weierstraß-Institut für Angewandte Analysis und Stochastik
- Konrad-Zuse-Zentrums für Informationstechnik