Wallis, R;
Degl'Innocenti, R;
Jessop, DS;
Ren, Y;
Mitrofanov, O;
Bledt, CM;
Melzer, JE;
... Ritchie, DA; + view all
(2016)
Integrating THz quantum cascade lasers with flexible dielectric-lined hollow metallic waveguides: Moving beyond free space optics.
In:
Proceedings of the 41st International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
IEEE
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Abstract
We demonstrate a THz optical delivery system capable of supplying a low divergence HE 11 Gaussian beam at a distance of >500mm from the facet of a THz quantum cascade laser. This is achieved by optimising the optical coupling to an external hollow flexible polystyrene-lined Ag waveguide, by utilising a monolithically integrated cylindrical metal waveguide in the laser mounting block. This is shown to achieve >80% coupling efficiency between the two waveguides, whilst maintaining the spectral integrity of the laser. A comparison with other excitation geometries, such as bare laser excitation, as well as a laser with a facet coupled silicon lens, is also analysed.
| Type: | Proceedings paper |
|---|---|
| Title: | Integrating THz quantum cascade lasers with flexible dielectric-lined hollow metallic waveguides: Moving beyond free space optics |
| Event: | 41st International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) |
| Location: | Copenhagen, DENMARK |
| Dates: | 25 September 2016 - 30 September 2016 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/IRMMW-THz.2016.7758564 |
| Publisher version: | https://doi.org/10.1109/IRMMW-THz.2016.7758564 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Technology, Physical Sciences, Engineering, Electrical & Electronic, Physics, Applied, Engineering, Physics, TRANSMISSION |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10094150 |
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