Integrated nonlinear photonics in the longwave-infrared: A roadmap

Abstract This article presents an overview of the current status and future prospects integrated nonlinear photonics in long-wave infrared (LWIR) spectrum, spanning 6 to 14 μm. range is well-suited for applications such as chemical identification, environmental monitoring, surveillance, search rescue, night vision. Nevertheless, advancement a mature, low-loss chip-level platform LWIR remains its infancy. We examine materials growth techniques, fabrication methods associated with LWIR, highlighting promising platforms like chalcogenide glass, single-crystalline diamond, Ge/SiGe, III–V compounds. Furthermore, we explore loss mechanisms, dispersion engineering, generation broadband supercontinuum frequency combs, device performance, encompassing photodetectors modulators. Lastly, propose roadmap development LWIR. Graphic