Justen, Matthias 2D patch antenna array on a double metal quantum cascade laser with >90% coupling to a Gaussian beam and selectable facet transparency at 1.9 THz. [electronic resource] - Optics letters Oct 2016 - 4590-4592 p. digital Publication Type: Journal Article ISSN: 1539-4794 Standard No.: 10.1364/OL.41.004590 doi