Experimentelle Sensorik

Visit to Chalmers Technical University, Sweden April 2025

Lars Persson, Dogukan Apaydin, Åsa Haglund from Chalmers Technical University, Ulrich Schwarz and Moritz Riedel from TU Chemnitz discussing photonic crystal surface emitting lasers (PCSELs) during a visit of Moritz and Ulrich to Chalmers in Göteborg, Sweden. The group in Chalmers achieved the first PCSEL lasing in deep ultraviolet (UV-C). Here, we compare and discuss measured angular resolved spontaneous and stimulated emission for different lattice constants of the photonic crystal with simulated dispersion curves.

Kulturgut Mathematik (und Physik) und Musik

„Kulturgut Mathematik und Musik“: Diskussion nach einem öffentlichen Vortrag über die Physik der Musikinstrumente im Kammermusikkonzertsaal der Städtischen Musikschule am Kaßberg am 15.4. Der Gastvortrag mit dem Thema „Dimension und Klang“ war ein physikalischer Beitrag zur Vortragsreihe „Kulturgut Mathematik“ und damit auch zur Kulturhauptstadt. Das Publikum hat sich mit Fragen und auch bei physikalischen Experimenten auf der Bühne sehr aktiv beteiligt. Offensichtlich hat es gerade den Musikern Freude gemacht, was der physikalische Hintergrund des Klangs ihrer Instrumente ist. Musik gab es auch: Julie Lehnert hat den Abend mit einem Satz aus Griegs Klaviersonate Nr. 7 in E-Moll musikalisch am Flügel eingeleitet. Wesentlich für den Vortrag waren Inhalte der Bachelorarbeiten von Philipp Löschau, Julie Lehnert, und Vincent Sammler zu Themen aus Physik und Musik.

PhD defense Lukas Uhlig

Lukas Uhlig succesfully defended his phD Thesis on the topic "Dynamics of Broad-Ridge AlGaInN Laser Diodes" on 15. April 2025. Congratulations and all the best for the future.

PhD defense Dominic Kunzmann

Dominic Kunzmann defended his phD Thesis on the topic "Hochauflösende Spektroskopie an (Al,In)GaN Laserdioden" on 14. April 2025. Congratulations and all the best for the future.

OWTNM Nottingham 2025

Moritz Riedel presented results on Photonics Crystal Surface Emitting Lasers (PCSELs) at the “31st International Workshop on Optical Waveguide Theory and Numerical Modelling” (IOP) at the Nottingham Trent University in Nottingham, UK. The talk on “Comparison of Coupled Wave Theory and Guided Mode Expansion for Photonic Crystal Surface Emitting Lasers with Hexagonal Lattice” discussed simulations by Moritz Riedel and Lukas Uhlig from TU Chemnitz and Lars Persson from Chalmers, Sweden. Lars is member of the group of Åsa Haglund, Chalmers, where the discussed deep-UV PCSEL haven been realized experimentally.
The picture shows Green’s Windmill in Nottingham, where George Green – the Green who devise the functions named after him – lived and worked: https://www.greensmill.org.uk/about/about-george-green/

IXth Winter Workshop Kalatowki 2025

In the last week of March, the IX Winter Workshop took place in Kalatowki, Poland. This workshop is organized by the Institute of High Pressure Physics of the Polish Academy of Sciences and was attended by various groups from Poland, Germany and Finland. During the workshop there were many exciting presentations and detailed discussions about AlInGaN semiconductor structures, especially in the field of light emitters. Two students from our group and Prof. Schwarz were participating.

Visit to Warschau, Februar 2025

In the last week of February, Shemshat and Jannina visited our project partners at the Institute of High Pressure Physics, Polish Academy of Science (IHPP PAS) in Warsaw. They were given an insight into parts of the work at the institute and were also able to observe the processes themselves. Of course, this also included a visit to the clean room (see photo).

Projektvorstellungen 2025

Am 11. Februar 2025 haben die Masterstudenten ihre Projekte aus dem Modul Physik und Sensorik präsentiert. Im Rahmen des Moduls sollten sie einen Prototypen zu einem sensorgesteuerten System entwickeln. Auch in diesem Jahr gab es viele verschiedenen Projektideen von Sensorsystem für sportliche Aktivitäten bis hin zu SmartCups.