Hollow metallic waveguides for beam shaping THz QCL

Degl'Innocenti, R., Shah, Y.D. , Jessop, D.S., Ren, Y., Wallis, R., Mitrofanov, O., Beere, H.E. and Ritchie, D.A. (2014) Hollow metallic waveguides for beam shaping THz QCL. In: 2014 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), Tucson, AZ, 14-19 Sept. 2014, pp. 1-2. (doi:10.1109/IRMMW-THz.2014.6956041)

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Abstract

We have realized a compact beam-shaping and collimating element for a double metal terahertz (THz) quantum cascade laser (QCL) emitting around 2.9 THz using directly integrated hollow metallic waveguides. Our approach allowed us to efficiently improve the beam profile with respect to the standard emission pattern observed out of a double metal QCL. The Gaussian-like mode profile emerging from the metallic waveguides also exhibited a remarkable degree of collimation. The other laser characteristics such as the total output power and maximal operational temperature were marginally affected.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Shah, Mr Yash Diptesh
Authors: Degl'Innocenti, R., Shah, Y.D., Jessop, D.S., Ren, Y., Wallis, R., Mitrofanov, O., Beere, H.E., and Ritchie, D.A.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
ISSN:2162-2027

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