Mattias Hammar

Prof. Mattias Hammar is a Professor at the Department of Electrical Engineering, Division of Electronics and Embedded Systems at KTH Royal Institute of Technology. He holds a MSc (1986) and PhD (1993) from KTH's Department of Physics. His research focuses on optoelectronic materials, photonic devices, and nanotechnology. He has led multiple national/international projects in photonics and serves as Program Director for KTH's International Master's in Nanotechnology. He teaches courses in analog/digital electronics, research methodology, and nanotechnology.

Research interests include semiconductor lasers (VCSELs, photonic crystal lasers), quantum dot-based photonics, nanomembrane fabrication, and quantum communication technologies. His work spans device fabrication, material characterization, and integration of III-V semiconductors with silicon platforms. Key projects involve developing single-photon sources for telecom applications and hybrid photonic systems.

He has advised numerous students through KTH's master's and PhD programs in electrical engineering and engineering physics. His lab focuses on next-gen optoelectronic devices with applications in quantum communication, energy harvesting, and flexible electronics.

Recent work includes advances in β-Ga₂O₃-based devices, entangled photon generation at telecom wavelengths, and nanomembrane transfer printing for silicon photonics. He collaborates with institutions like IBM Research and Zarlink Semiconductor, emphasizing industrial-academic partnerships.