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Qu-PIC

Technishe Universität Berlin

Corporate presentation

The profile of the Institute of Solid State Physics at Technische Universität Berlin (TUB) features a broad spectrum of fundamental and application-oriented research in the area of photonics and materials.

This includes epitaxial growth of III-V semiconductor nanostructures, exploration of new materials (e.g., graphene, 2D-materials), as well as the development of nanophotonic (quantum) devices, photonic integrated circuits (PICs), and systems. The research activities at TUB are supported by jointly used central infrastructure, such as the Center of Nanophotonics, enabling the development of a variety of photonic devices, i.e. single-photon emitters for quantum information processing, deterministic photon sources for quantum communication networks as well as far-UVC LEDs for disinfection, sensing, and medical applications. Much of the research takes place in the context of national as well as international projects and networks and has already led to several successful spin-offs.

TUB has a 15+ year history on developing (Al,In,Ga)N-based LEDs and laser diodes. By covering the complete processing chain from heterostructure and device design, materials growth, chip processing, and device characterization TUB has been developing UV-LEDs in a wide wavelength range from 400 nm to 217 nm with world-class performance. More recently research activities have expanded to the development of UVC laser diodes and vertical cavity surface emitting lasers (UV-VCSELs) as well as the incorporation of these devices in UV photonic integrated circuits (UV-PICs). TUB and Ferdinand-Braun-Institute (FBH) collaborate closely in the “JointLab “GaN Optoelectronics” and are capable of delivering packaged UV-LEDs, blue-violet laser diodes, and custom UV-LED modules to application partners.

Role in the project

The group at TUB has a 15+ year history of developing LEDs and laser diodes based on (Al,In,Ga)N and covers the complete processing chain from heterostructure and device design, epitaxial growth, chip processing, and device characterization. In the QU-PIC project, the group led by Prof. Dr. Michael Kneissl is responsible for the growth of AlGaN-based UVC laser heterostructures, device fabrication, and testing. In collaboration with Chalmers, TUB is developing a novel lift-off process for the fabrication of thin AlGaN-membranes and the transfer-printing of UVC lasers to photonics integrated circuits.

Contact

Prof. Dr. Michael Kneissl
kneissl@physik.tu-berlin.de