Home > Research > Publications & Outputs > Integrating THz quantum cascade lasers with fle...

Links

Text available via DOI:

View graph of relations

Integrating THz quantum cascade lasers with flexible dielectric-lined hollow metallic waveguides: Moving beyond free space optics

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paperpeer-review

Published
  • R. Wallis
  • Riccardo Degl'Innocenti
  • D. S. Jessop
  • Y. Ren
  • O. Mitrofanov
  • C. M. Bledt
  • J. E. Melzer
  • J. A. Harrington
  • H. E. Beere
  • D. A. Ritchie
Close
Publication date28/11/2016
Host publication41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
PublisherIEEE Computer Society
Number of pages2
Volume2016-November
ISBN (Electronic)9781467384858
ISBN (Print)9781467384865
<mark>Original language</mark>English
Event41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 - Copenhagen, Denmark
Duration: 25/09/201630/09/2016

Conference

Conference41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
Country/TerritoryDenmark
CityCopenhagen
Period25/09/1630/09/16

Conference

Conference41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
Country/TerritoryDenmark
CityCopenhagen
Period25/09/1630/09/16

Abstract

We demonstrate a THz optical delivery system capable of supplying a low divergence HE11 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.