Fraunhofer Institute for Integrated Circuits IIS, Am Wolfsmantel 33, Erlangen, 91058, Germany. veit.wiesmann@iis.fraunhofer.de.|Fraunhofer Institute for Integrated Circuits IIS, Am Wolfsmantel 33, Erlangen, 91058, Germany.|Optical Imaging Centre Erlangen (OICE), Hartmannstraße 14, Erlangen, 91052, Germany.|Fraunhofer Institute for Integrated Circuits IIS, Am Wolfsmantel 33, Erlangen, 91058, Germany.|Fraunhofer Institute for Integrated Circuits IIS, Am Wolfsmantel 33, Erlangen, 91058, Germany.|Fraunhofer Institute for Integrated Circuits IIS, Am Wolfsmantel 33, Erlangen, 91058, Germany.