@inproceedings{56bd36b4cbf14272b3b969115fa74475,
title = "Topological materials as promising candidates for tuneable helicity-dependent terahertz emitters",
abstract = "Topological materials have rapidly gained interest as contenders for development of coherent, controllable terahertz emitters. Possessing Weyl nodes either at the surface or within the bulk, they host spin-polarised, helicity-dependent currents that offer possibility to control the emitted THz pulse by changing the polarization of the optical pulses generating the radiation. Here, we show that upon near-infrared excitation at oblique incidence, multi-cycle pulses are generated with a narrow bandwidth of ∼0.4 THz for cadmium arsenide bulk crystals and nanowire ensembles. Both the bandwidth and peak emission frequency of the generated THz radiation can be tuned by respectively varying the photon helicity and angle of incidence of the photoexcitation light.",
keywords = "Dirac semi-metals, emission, helicity-dependent, nanowires, terahertz, topological materials",
author = "Boland, {Jessica L.} and Damry, {Djamshid A.} and Xia, {Chelsea Q.} and Yahya Saboon and Abdul Mannan and Piet Sch{\"o}nherr and Dharmalingam Prabhakaran and Herz, {Laura M.} and Thorsten Hesjedal and Johnston, {Michael B.}",
note = "Publisher Copyright: {\textcopyright} 2023 SPIE.; Terahertz Emitters, Receivers, and Applications XIV 2023 ; Conference date: 21-08-2023 Through 22-08-2023",
year = "2023",
doi = "10.1117/12.2681745",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Manijeh Razeghi and Mona Jarrahi",
booktitle = "Terahertz Emitters, Receivers, and Applications XIV",
address = "United States",
}