Mark D. Thomson

TL;DR: In this paper, the authors review the generation of broadband THz radiation from femtosecond photo-induced gas plasmas, with an emphasis on the highly efficient AC-bias case where the plasma is generated and driven by a superposition of fundamental and second-harmonic optical fields.

TL;DR: A threshold for THz generation is identified that proves that generation of a plasma is required and that the nonlinearity of air is insufficient to explain measurements, and the plasma emitter is competitive with other state-of-the-art THz emitters.

TL;DR: In this paper, an approach to determine the carrier-envelope (CE) phase by down-conversion of the laser light to the terahertz frequency range by means of plasma generation in ambient air was introduced.

TL;DR: In this paper, an all-opto-electronic THz imaging system based on photomixing of two continuous-wave laser beams using photoconductive antennas is presented.

TL;DR: A survey of the status of five active THz imaging modalities which have developed and investigated during the last few years with the goal to explore their potential for real-time imaging is presented in this paper.