Werner Schrenk

TL;DR: In this paper, the authors demonstrate that by monolithically integrating graphene with a Fabry-Perot microcavity, the optical absorption is 26-fold enhanced, reaching values >60%.

TL;DR: A monolithically integrated sensor based on mid-infrared absorption spectroscopy based on a bi-functional quantum cascade laser/detector is used, where, by changing the applied bias, the device switches between laser and detector operation.

TL;DR: The ability to probe the field intensity inside the photonic crystal and thereby to directly measure BICs represents a milestone in the development of integrated opto-electronic devices based on BICS.

TL;DR: In this article, the authors increased the active region/waveguide thickness of terahertz quantum cascade laser with semi-insulating surface plasmon waveguides by stacking two symmetric active regions on top of each other, via a direct wafer bonding technique.

TL;DR: In this paper, GaN-based high electron mobility transistors (HEMTs) with a 2-nm-thin InAlN/AlN barrier capped with highly doped n++ GaN are presented.