Waveguide integration of a >4.7‐THz quantum‐cascade laser
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2023-01-01 |
| Journal | Electronics Letters |
| Authors | Eleanor Nuttall, Yingjun Han, Diego Pardo, Sanchit S. Kondawar, N. Brewster |
| Institutions | Rutherford Appleton Laboratory, University of Leeds |
| Citations | 2 |
Abstract
Section titled “Abstract”Abstract Waveguide integration of terahertz quantum cascade lasers (THz QCLs) is demonstrated at frequencies above 4.7 THz. A precision micromachining technique, followed by diamond‐turning and electroless‐plating has been used to manufacture hollow rectangular waveguides with integrated diagonal feedhorns. It is shown that surface roughness at the level is achieved, enabling outcoupling of radiation in the 4.75-5.05 THz band, with a divergence angle of along the plane of the QCLs substrate.