W. Maineult

TL;DR: By demonstrating a general technique to implement reflecting or absorbing boundaries, this work produces evidence that whispering-gallery-like modes or true photonic-crystal states can be alternatively excited and provides a solution for the quasi-total lack of directionality typical of THz semiconductor lasers based on metal–metal waveguides.

TL;DR: In this article, the authors demonstrate phase-locking of a 2.7-THz metal-metal waveguide quantum cascade laser (QCL) to an external microwave signal, which opens the possibility to extend heterodyne interferometers into the far-infrared range.

TL;DR: By directly modulating the bias voltage of a double-metal waveguide, 2.8THz quantum cascade laser, this paper observed the appearance of multiple gigahertz sidebands in the emission spectrum, with a spacing that can be continuously tuned up to 13GHz.

TL;DR: In this paper, a 2.8 THz metal-metal quantum cascade laser operating with a microtransverse-electromagnetic-horn antenna has been demonstrated and compared to a standard ridge cavity with a cleaved facet.

TL;DR: In this paper, a method based on photonic-band engineering is proposed to optimize the resonator quality factors of devices operating on band-edge photoniccrystal states, which yields improved maximum operating temperatures and angularly narrow, single-lobed surface emission.