2023/10/20 by Mervin Lim Pac Chong, Kareem J. Garriga Francis, Chong, Mervin Lim Pac +5
Chemistry · Engineering · Physics and Astronomy · #Advanced Chemical Physics Studies #FOS: Physical sciences #Optics (physics.optics) #Spectroscopy and Laser Applications #Terahertz technology and applications
paper · pdf · doi:10.48550/arxiv.2310.13374
openalex publication_date 2023/10/20 · openalex created_date 2023/10/24 · openalex updated_date 2026/07/28
We present a single-shot detection method of terahertz-correlated second harmonic generation in plasma-based sources by directly mixing an optical probe into femtosecond laser-induced plasma filaments in air. The single-shot second harmonic trace is obtained by measuring second harmonic generation on a conventional CCD with a spatio-temporally distorted probe beam. The system shows a spectrometer resolution of 22 fs/pixel on the CCD and a true resolution on the order of the probe pulse duration. With considerable THz peak electric field strengths, this formalism can open the door to single-shot THz detection without bandwidth limitations.