Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
}
TY - GEN
T1 - Integrating THz quantum cascade lasers with flexible dielectric-lined hollow metallic waveguides
T2 - 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
AU - Wallis, R.
AU - Degl'Innocenti, Riccardo
AU - Jessop, D. S.
AU - Ren, Y.
AU - Mitrofanov, O.
AU - Bledt, C. M.
AU - Melzer, J. E.
AU - Harrington, J. A.
AU - Beere, H. E.
AU - Ritchie, D. A.
PY - 2016/11/28
Y1 - 2016/11/28
N2 - 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.
AB - 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.
U2 - 10.1109/IRMMW-THz.2016.7758564
DO - 10.1109/IRMMW-THz.2016.7758564
M3 - Conference contribution/Paper
AN - SCOPUS:85006149513
SN - 9781467384865
VL - 2016-November
BT - 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
PB - IEEE Computer Society
Y2 - 25 September 2016 through 30 September 2016
ER -