Regensburg 2025 – scientific programme

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PRV: Preisträgervorträge

PRV IV

PRV IV: Prize Talk

Wednesday, March 19, 2025, 13:15–13:45, H4

Nanowire-based THz polarimetry — •Michael Johnston — Department of Physics, University of Oxford, Oxford, UK. — Laureate of the Max-Born-Prize 2025

Semiconductor nanowires show extreme polarization selectivity for both visible and terahertz photons. We are utilising an in-depth knowledge of ultrafast charge-carrier dynamics in nanowires to develop unique devices for THz polarimetry. Our photoconductive THz sensors based on a hash-nanowire architecture are compact and recover the full polarisation state of THz pulses. These nanowire-based devices are showing promise in areas including semiconductor characterisation and the development of metamaterials for THz polarisation manipulation.

Keywords: terahertz; ultrafast; semiconductor; nanowire