O
Oliver Ambacher
Researcher at Fraunhofer Society
Publications - 862
Citations - 29006
Oliver Ambacher is an academic researcher from Fraunhofer Society. The author has contributed to research in topics: Amplifier & Monolithic microwave integrated circuit. The author has an hindex of 64, co-authored 848 publications receiving 26256 citations. Previous affiliations of Oliver Ambacher include Osram & Siemens.
Papers
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Journal ArticleDOI
Corrugated piezoelectric membranes for energy harvesting from aperiodic vibrations
N. Heidrich,Fabian Knöbber,Fabian Knöbber,Vladimir Polyakov,Volker Cimalla,Wilfried Pletschen,R. E. Sah,Lutz Kirste,Steffen Leopold,S. Hampl,Oliver Ambacher,Oliver Ambacher,Vadim Lebedev +12 more
TL;DR: In this paper, non-resonant piezoelectric micro-energy-harvesters based on corrugated membranes made from aluminium nitride were designed to respond efficiently to aperiodic mechanical impact at low repetition rates.
Patent
Electronic components produced by a method of separating two layers of material from one another
Michael Kelly,Oliver Ambacher,Martin Stutzmann,Martin S. Brandt,Roman Dimitrov,Robert Handschuh +5 more
TL;DR: In this paper, a semiconductor body is transferred from a growth substrate to a support material by exposing an interface between the growth substrate and the SINR, and decomposing a material at or in proximity to said interface by absorption of the electromagnetic radiation.
Journal ArticleDOI
Excitonic contribution to the optical absorption in zinc-blende III-V semiconductors
TL;DR: In this article, the imaginary part of the dielectric function of zinc-blende III-V semiconductors in the vicinity of the direct absorption edge was calculated using the $kp$ model of the band structure and the Elliott's theory of excitonic absorption.
Proceedings ArticleDOI
Backside Process Free Broadband Amplifier MMICs at D-Band and H-Band in 20 nm mHEMT Technology
Thomas Merkle,Arnulf Leuther,S. Koch,Ingmar Kallfass,Axel Tessmann,Sandrine Wagner,Hermann Massler,Michael Schlechtweg,Oliver Ambacher +8 more
TL;DR: In this paper, high gain amplifier MMICs addressing broadband radar and communication applications at the waveguide bands WR-6 (110 - 170 GHz) and WR-3 (220 - 325 GHz) are presented.
Journal ArticleDOI
Defect related absorption and emission in AlGaN solar-blind UV photodetectors
TL;DR: In this paper, room temperature electro-optical and structural analysis have been applied to study the origin of the defect-related absorption and emission in solar-blind AlGaN UV-photodetectors grown by molecular beam epitaxy on c-plane sapphire and Si(111) substrates.