| Autor: |
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 |
| Předmět: |
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| Zdroj: |
Electronics Letters (Wiley-Blackwell); Jan2023, Vol. 59 Issue 2, p1-3, 3p |
| Abstrakt: |
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 <5∘${<5^{\circ }}$ along the plane of the QCLs substrate. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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