infrared millimeter terahertz waves scientific conferences

The efficiency of Terahertz photo-conductive-switches was overlooked for a very long time. To address the efficiency problems, in this contribution, we present a new photo-conductive switch whose design is 3-dimensional. The proposed photo-conductive switch can enhance the overall efficiency by increasing the optical absorption within the device and maximise the carrier collection at the electrodes. The design of this novel switch takes advantage of photonic and plasmonic modes excited in the device due to a periodic array of nanopillars.
We numerically show a 50-fold improved efficiency compared to traditional designs. The first prototypes are fabricated and extensive characterisation is ongoing.