Waveguide integration of a >4.7‐THz quantum‐cascade laser

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....

Full description

Saved in:
Bibliographic Details
Published in:Electronics letters 2023-01, Vol.59 (2), p.n/a
Main Authors: Nuttall, Eleanor, Han, Yingjun, Pardo, Diego, Kondawar, Sanchit S., Brewster, Nick, Salih, Mohammed, Li, Lianhe, Horbury, Michael D., Davies, A. Giles, Linfield, Edmund H., Wang, Hui, Dean, Paul, Ellison, Brian N., Valavanis, Alexander
Format: Article
Language:English
Subjects:
Electroless plating
Electrons
Fourier transforms
Gold
Grain size
Heat
Lasers
Micromachining
microwave technology
Plating
Power
Quantum cascade lasers
Radiation
Rectangular waveguides
submillimetre wave integrated circuits
substrate integrated waveguides
Substrates
Surface roughness
Temperature
Terahertz frequencies
terahertz wave devices
terahertz wave generation
waveguide components
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 ≈1μm$\approx {1}\,{\mu }\text{m}$ level is achieved, enabling outcoupling of radiation in the 4.75–5.05 THz band, with a divergence angle of
ISSN:0013-5194
1350-911X
DOI:10.1049/ell2.12703