Planar integrated metasurfaces for highly-collimated terahertz quantum cascade lasers

• Main Authors: Liang, Guozhen, Dupont, Emmanuel, Fathololoumi, Saeed, Wasilewski, Zbigniew R., Ban, Dayan, Liang, Hou Kun, Zhang, Ying, Yu, Siu Fung, Li, Lianhe H., Davies, Alexander Giles, Linfield, Edmund H., Liu, Hui Chun, Wang, Qi Jie
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2015
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/106938; http://hdl.handle.net/10220/25159
• Institution: Nanyang Technological University

We report planar integration of tapered terahertz (THz) frequency quantum cascade lasers (QCLs) with metasurface waveguides that are designed to be spoof surface plasmon (SSP) out-couplers by introducing periodically arranged SSP scatterers. The resulting surface-emitting THz beam profile is highly...