1. AMO GmbH Otto‐Blumenthal‐Strasse 25 52074 Aachen Germany
2. Chair of Electronic Devices RWTH Aachen University Otto‐Blumenthal‐Strasse 25 52074 Aachen Germany
3. Chair of High Frequency Electronics RWTH‐Aachen University Kopernikusstraße 16 52074 Aachen Germany
4. Compound Semiconductor Technology RWTH Aachen University Sommerfeldstrasse 18 52074 Aachen Germany
5. School of Engineering EPFL BM 2141, Station 17 1015 Lausanne Switzerland
6. AIXTRON SE Dornkaulstrasse 2 52134 Herzogenrath Germany
7. Bergische Universität Wuppertal Lise‐Meitner‐Str. 13 42 119 Wuppertal Germany