Air-photonics based terahertz source and detection system Emilien Prost, Vincent Loriot, Eric Constant, Isabelle Compagnon, Luc Bergé, Franck Lépine and Stefan Skupin Eur. Phys. J. Spec. Top., 232 13 (2023) 2157-2166 Published online: 23 December 2022 DOI: 10.1140/epjs/s11734-022-00748-7